/SQTDDTOT/

[Anonymous No.1573246]

Welcome to /SQTDDTOT/, where there are no stupid questions, only stupid anons. At least try to google it. Old thread >>1563055

I have googled the numbers and even asked an electrician. What is this capacitor? (Blue) Its blown out and I need a replacement. Also FYI it’s on a power supply unit for an old microscope bulb.

[Anonymous No.1573253]

330nF 400V film capacitor

[Anonymous No.1573259]

>>1573246
>it’s on a power supply unit for an old microscope bulb.
It's a power supply. The critical factors are capacitance, voltage, polarized or non-polarized, and size.

Blue drop, Orange drop, Brown Drop won't really matter as long as it's .33µf 400V film of some sort that fits into the space available.

[Anonymous No.1573278]

>>1573253
>>1573259
OP here. You two are doing God’s work. Been trying to figure it out for two days.

[Anonymous No.1573281]

In a new construction, how much more does it cost to pipe your house for higher BTU gas appliances? I'd love a 100k burner in the kitchen

[Anonymous No.1573287]

>>1573281
depends on the length of the line

https://www.engineeringtoolbox.com/natural-gas-pipe-sizing-d_826.html

[Anonymous No.1573291]

How easy is it to change door locks? I want locks on my bedroom (rented share house) and the knob looks like it's from the sixities/seventies.

[Anonymous No.1573306]

I have an oldish motorcycle that I need to replace the brake fluid reservoir on, the old one is dented and I'm afraid it'll leak. The brake fluid was replaced a month ago though, if I replace the reservoir can I just throw a little fluid in and be good to go, or do I have to flush everything out again?

Thanks boys

[Anonymous No.1573323]

>>1573291
Do you have a Phillips screwdriver and 15-20 dollars to buy a front door tier lock with key? That's how easy.

[Anonymous No.1573324]

>>1573306
It's a motorcycle death machine I'd spend the extra 6 bucks on brakes

[Bepperoni No.1573347]

>>1573291
Even I can do it without screwing up too much.

[Anonymous No.1573385]

>>1573246
What would be a good material to stick in between glass and a self adhesive LED strip? Basically I want to be able to salvage the LED strip if I ever decide to take it off the glass. I was thinking of using aluminum but I have no way to cut that shit myself. Would using regular plastic sheets work? Is there a "name" for "regular plastic sheets"?

[Anonymous No.1573386]

>>1573385
You don’t need a plasma cutter to get through aluminum foil...

[Anonymous No.1573394]

I was originally thinking about these but I literally have no idea how I would cut it. I have no tools

[Anonymous No.1573400]

>>1573394
Meant to reply to >>1573386

[Bepperoni No.1573466]

>>1573394
Hack saw and then sand or file the rough edges if you’re severely limited on tools and funds.

[Anonymous No.1573486]

>>1573466
Do Home Depot/Lowes stores have free cutting services? Home Depot's online website has Aluminum L bars for sale

[Anonymous No.1573560]

I just bought this, arriving sometime next week;
https://www.amazon.com/gp/product/B005CFLFMA/
I want to use it for making my own oven. Even includes a fan to circulate the heat.
It states that it has a temperature protecting PTC that caps the unit out at 85°C.
Would I be able to bypass that to make it max out its heating capabilities?

[Milwaukee No.1573575]

>>1573560

yep you sure could

but i dont think this thing actually produces any heat. it just distributes it. as far as i can tell.

as for the temperature protection;

remove all wiring, wire the on/off/speed controller directly to the motor, skipping the other shit

or a little less mongolian, find its thermistor, measure its resistance at any working temperature. replace thermistor with resistor of same value. just taking it out of the circuit and butt connecting the 2 wires in its place may work, theres literally 0 documentation on those things that i can find.

not going to bother telling you why its probably a bad idea to expose that thing to anything over its upper temp limit. im sure youre aware

[Milwaukee No.1573579]

>>1573575

oooh i see now theres 2 models, one with a heating element and one with the blower fan only.

well everything else still applies

[Anonymous No.1573624]

how to maintain an elliptical? mine is making a knocking sound

[Anonymous No.1573641]

>>1573624
Figure out if a part is loose or if you need new bearings
Owners manual should have scheduled maintenance
If not, it’s not intended to be worked on.

>>1573486
You can buy a dry metal chop saw for small things like this or use an oscillating tool if you’re cheap

[Anonymous No.1573642]

>>1573306
no, there'll be a bubble in the line when you replace it.
brake fluid is very cheap though, just bleed them.

[Anonymous No.1573653]

>>1573246
Building a 5m by 3m by 2m tall outside aviary out of nb20 pipes (26.9mm outside diameter, 2.6mm wall) yes or no? It would be on a balcony, so not terribly exposed.
I have no experience at all with building structures, no bully pls.

[Anonymous No.1573676]

Hello, I have to make a articulation between 2 axis controlled by a motor but I don't know which way I should do it
Differents ways I have in mind are :
Direct control on the axis
Indirect control with belt
Indirect with ballscrew
I guess there are a lot more but I don't really know where to search, what are the pros/cons. Anyone have a good source of informations ?

[Anonymous No.1573684]

Recommend me my first circular saw

I'm an Ausfag so I will be buying it from this shop

https://www.bunnings.com.au/our-range/tools/power-tools/power-saws/circular-saw?gclsrc=aw.ds&&gclid=CjwKCAjw96fkBRA2EiwAKZjFTd1j5IKfYfgeZx__Yhm9HMUvb8waGrIPlJE7KzkoFwvyjkOV5CDnThoCo40QAvD_BwE

ideally I would like to limit my budget to $200 if possible. obviously spending less the better.

[Anonymous No.1573904]

Where is a good place to look for engine blue prints?

Specifically 4.0 V6 OHV found in the Ranger, Explorer, and Astro from '90ish-97ish

Cross posting in /o/

Tanks for your help

[Anonymous No.1573907]

>>1573676
Look up DIY CNC machines, specifically projects people have made with the Marlin Firmware.

My DIY wood routing table uses toothed pulleys on stepper motors and works just fine, ball screws get really expensive really fast.

[Anonymous No.1573909]

>>1573575
>not going to bother telling you why its probably a bad idea to expose that thing to anything over its upper temp limit. im sure youre aware
Aside from busting it I don't see what would be the issue

[Anonymous No.1573985]

Ideas on cutting a circle in lexan without putting a hole through the lexan itself with a dremel? I got the circle cutter attachment but I realized you punch a hole to pivot it, i thought it was a suction or something.

[Anonymous No.1573989]

>>1573985
pic related, shitty first attempt by hand with the basic cutter. Maybe 33 cm diameter

[Anonymous No.1574007]

>>1573989
33 mm*

[Bepperoni No.1574012]

>>1573684
That $109 Makita looks like a solid bet if you’re going corded. Then spend another few dollhairs on some good blades. You don’t need magnesium parts for a weekend project saw.

[Anonymous No.1574031]

>>1573985
Use a circle template

[Anonymous No.1574067]

>>1573985
You want the circle you remove to be intact in the center?

[Anonymous No.1574081]

I need to make lamp covers for some wall lights in my caravan from scratch and I cannot for the life of me find where to get what to do it.

I know they usually use a plastic sheet stretched over wire with whatever texture or pattern over the top of that.. but WHAT AND WHERE!!?

[Anonymous No.1574105]

My grandfather is really old and hes getting contracts from a geothermal company. Well he might "go on" in some years. Im having problems on what kind of engineering i should get(college) to understand the heavy machinery he uses. He makes those flange things. Strainer baskets with holes. I dont want to miss the opportunity since i live in a third world and his contracts are just too good.
Phoneposting right now and cant upload images for some reason. Ill send some of the machines and things he uses/makes later.

[Anonymous No.1574110]

I bought this old Sargent bench plane and it's in need of serious sharpening and flattening in various places, but before that it needs cleaning.
Its got this... shit(?) in it. I think it's bug shit, there was some kind of lightweight bug sac in it might have belonged to a wasp. I quarantined it in the trash but still have to get the rest out.
What would you use? Soapy wooder? Mineral turpentine?

[Anonymous No.1574112]

>>1574110
Also the screw on the front knob is bent and I'm not sure what to do about that. I don't want to hammer the screw out in case it cracks the knob, but at the same time I don't know about bending the screw with the knob in place

[Anonymous No.1574150]

>>1574110
You posted the thumbnail. Post the full-size image and we might be able to tell what it is and what you need to clean it.

[Anonymous No.1574157]

>>1574150
That wasn't a thumbnail, i resized it because 4chan doesn't like my 8MB photos. Anyways i went at it with some soapy wooder and learned how to get in really tight spaces with steel wool for apparently 3 hours. 99% of the shit removed, along with some paint, but that's nothing compared to the giant missing chunk from the plane body the previous owner fucked up

[Anonymous No.1574158]

>>1574157
and it was bug shit because it was in literally every crevice, as bug shit tends to do which other stains don't

[Anonymous No.1574161]

>>1574081
That plastic sheet is a diffuser so keep in mind that any seams, cracks, overlaps or irregularities will be very noticeable when the light is turned on.
source: tried to fix an old cracked lampshade me self and failed buffoonishly

[Anonymous No.1574163]

>>1574081
>plastic sheet
can't you use literally anything you want?
I'm pretty sure your picture is a piece of cloth.

[Anonymous No.1574164]

>>1574163
p.s. they didn't have plastic back in WW2 and they made their lampshades out of jew skins
that cloth lampshade is like a sock, made at a specific length with a wire sown in and shaped into a square

[Anonymous No.1574186]

>>1574163

No it will catch fire

[Anonymous No.1574360]

I want to make a keyboard out of plywood. I could just get it laser cut pretty cheap but I already have a piece of 2mm plywood here so I'd like to use that. I'll need to make some holes and possibly some non-convex shapes.

Will a chisel work here or will thin plywood splinter randomly?

[Anonymous No.1574403]

>>1574150
>You posted the thumbnail.
>>1574110
>(381 KB, 586x1041)
hardly a thumbnail
pic related is a thumbnail

[Anonymous No.1574424]

>>1574360
>possibly some non-convex shapes
So, concave?
>but I already have a piece of 2mm plywood
doubt.jpg
Take a picture of it, I want to see what you have.

[Anonymous No.1574433]

Does anybody know about a cheap laser cutting service I can use to make some acrylic front plates?
I've tried Ponoko but they charge almost 40$ for shipping (I'm in EU)

[Anonymous No.1574452]

>>1574433
Google your city laser cutting, or your city makerspace/fablab

[Anonymous No.1574470]

>>1574452
There's only metal cutting in my area, and makerspaces are very rare where I live. EU based companies charge me almost the same.
More specifically I was asking if there's a cheap chinese laser cutting service with free or low shipping fees that people use around here.

[Anonymous No.1574473]

>>1574433
what city are you located in? i bet i could find a shop in your area

[Anonymous No.1574495]

>>1574473
There are a couple companies, I have emailed them to ask for a quote, I'm guessing it won't be cheap. At least you can't say I haven't tried.

[Anonymous No.1574502]

>>1574495
if it's such a pain then why don't you do something else?
chemical etching, use something other than acrylic, possibilities are endless.

[Anonymous No.1574505]

>>1574502
>chemical etching
That sounds interesting. I'm already etching PCBs.
How hard is it to etch an acrylic plate?

Not him btw

[Anonymous No.1574518]

>>1574502
I have to put a tiny oled display behind the acrylic, those displays have no mounting bezels and they look like dogshit unless they're behind tinted acrylic.
I'm just looking for recommendations on a cheap chinese laser cutting service, not design advice.

[Anonymous No.1574525]

Im trying to repair my headphones because fuck I really think I can do it , the problem is that I don't know which one is left/right, etc.
btw, the plug im using is a simple one, ill give up the microphone.

[Anonymous No.1574527]

>>1574081

you can make it out of wood veneer or mica. lots of DIY pages if you google it.

[Anonymous No.1574529]

>>1574525
>I don't know which one is left/right, etc.

you can figure everything out with 60 secs of trial and error.

[Anonymous No.1574561]

>>1574518
you really think freight from china is going to be so cheap for a one-off item?
just go to your local university and see if they'll let you use the laser cutter.

[Anonymous No.1574572]

>>1574529
Ive tried so far with the aparently 4 or 5 wires but left side is still not working, Im pretty sure the problem comes from the side I cut but I cant find any other solution

[Anonymous No.1574576]

>>1574424
>So, concave?
Yes, indeed.
>Take a picture of it, I want to see what you have.
It's night here right now so the photo would be shit so I just got one from the Internet. Mine looks pretty much the same.

[Anonymous No.1574642]

>>1574561
I order PCBs from china all the time and the shipping usually costs around $8-10 for a pack of 5 boards.

[Anonymous No.1574645]

>>1573246
my dirt driveway has turned to a muddy, unparkable hellscape due to snow melt, what's the cheapest thing I can fill it in with? (northeast US)

[Anonymous No.1574734]

>>1574572
>Im pretty sure the problem comes from the side I cut

heaphone cords usually go bad at the extremities, where they bend. if you dont have alligator clips, have someone else flex the cable all along its length while you touch the wires to the plug and listen for sound. it's easy to fool yourself doing this, so make sure only one section of cable is flexed at a time. tape the rest to the table so it cant move.

[Anonymous No.1574735]

Does anyone have any tips for cutting alumnium angles at home? All I have is a hacksaw

[Anonymous No.1574736]

>>1574645
Gravel and some Quickrete sprinkled over it

[Anonymous No.1574737]

>>1574735
>All I have is a hacksaw

hold hacksaw between your legs, place Al piece on top of blade and slide it back and forth for 30 minutes using one of the edges as a guide.

[Anonymous No.1574762]

>>1574735
Get some tools to do it properly you welfare case

[Milwaukee No.1574778]

>>1574525

is this just one side? the right ear?

red = right
green or blue = left

the 2 coppers are common, just twist them together

make sure you burn then lightly sand the enamel off the wires before you splice with whatever method you choose. i prefer a western union knot over solder/crimp for headphones (and everything else really)

the mic will appear to be one wire, but it will be something like white or yellow with a weaved mesh over it. the mesh is the common, the coated inside is the mic. just cut and resplice, then insulate so they dont touch. same as the others.

[Anonymous No.1574783]

Soldering small stuff sucks. I ruined about 3 times, and the last time I tore it down because I was getting continuity between + and G, which I thought meant a short. But I figured out afterwards is because they connect through the fucking speaker.

I was really surprised to see the headphone speakers were ~70 ohms. So aside from patting myself on the back, I'm here to ask

>How can you have a common negative? Won't signals get mixed? I really don't understand some fundamental shit about electronics.

Like to push the speaker cone outwards, our amplifier pulls electrons from G to +. And to pull it inwards, it pushes electrons from + to G. Is this at all correct?

And if the G is shared how the hell does that work? I mean if this was a water metaphor, you couldn't be pushing and pulling water from one side without affecting the other sides.

This shit makes me feel stupid - no matter how much I read, it just doesn't click.

>>1574525
>>1574525
haha just saw that you too are fucking with this stuff tonight.

[Anonymous No.1574785]

>>1574525
>>1574778

Is this a gaming headset with left/right and then a microphone? Can you show me original jack? Does it have 4 sections instead of 3? ( TRRS )

[Anonymous No.1574786]

>>1574778
>i prefer a western union knot over solder/crimp for headphones (and everything else really)

htf do you tie those tiny wires into a knot.

[Anonymous No.1574913]

I’m in the market for a laser thermometer partly for fun but also for just little jobs here and there where I need to know temperatures interested in something that could be precise enough to follow along with temperature gradient says I cook and do a little HVAC things here and there. I wouldn’t mind getting a bit more expensive than I was originally planning but only if it’s worth it. What can I expect in the 15 25and $50 range is and what would be the best buy overall?

[Anonymous No.1574969]

>>1574783
Common grounds are fine for normal speaker driving. Signals won't get mixed. You have power going from the positive terminal through the coil to reproduce sound. The negative (Or Ground/Neutral) is just a return path. The speaker is "pushed" out.
If you are running a speaker on a "Bridge Tied Load" then you need separate +/- lines. In a BTL topology, the amplifier will send power from the + terminal to "push" the speaker out, then reverse the polarity to "Pull" the speaker back in.
Mildly confusing, but I'm trying to keep it simple.

[Anonymous No.1575003]

why do organic solvents give off so much odor when mixed with water?
like when i clean a bucket with iso and then wash it off again in the sinn

[Anonymous No.1575005]

>>1574913
If you're just wanting to play, pic related.
https://www.tmart.com/BENETECH-GM320-Non-Contact-Laser-LCD-Display-Digital-IR-Infrared-Thermometer-Temperature-Meter-Gun-50-to-330_p377040.html

If you're serious, get a Fluke.
https://www.amazon.com/Fluke-infrared-thermometers/s?k=Fluke+infrared+thermometers

For HVAC work you need a contact thermometer.

[Anonymous No.1575008]

>>1575003
The solvents stink because water doesn't really wash away solvents.

[Anonymous No.1575042]

So I have this ham radio microphone laying around being useless. I've thought about converting it somehow to use on my computer. I have zero experience in electronics aside from splicing some wires. How difficult of a task would this be to undertake do you think?

[Anonymous No.1575046]

>>1575042
Before you cut shit off, get yourself a fitting 4 pin aviation socket (they're cheap on ebay and similar).

Two pins are going to be the microphone connection, the other 2 are going to be for the PTT button. So you only need test to which is which.

[Anonymous No.1575060]

>>1575046
The connector is actually missing from mine.

[Anonymous No.1575081]

I'm looking to build a structure with walls made of OSB. Can I waterproof them with bitumen membrane on the outside before EIFS?

[Anonymous No.1575086]

I have a bunch of laptops that don't work (they do not boot to BIOS or any firmware). Mostly various thinkpads. Any resources for troubleshooting and learning how to fix them?

Today, my trusty x60 bit the dust while just sitting on the kitchen table. I came back to it and it just wouldn't turn on, no LEDs or fan spinning or anything.

[Anonymous No.1575108]

Im in need of a new computer desk, my ideal dimensions would be 36 in wide by about 60 inches long. I have been having a hard time finding a table big enough for this. I have some tools and am handy enough to build a table if you can show me where to buy a table top with roughly those dimensions. Budget is around $300. If you can direct me or give me any ideas I would appreciate it.

[Anonymous No.1575117]

>>1575108
You can
>join wood strips to get your desired measurements
>join two plywood sheets and dimension them to get you desired dimensions
>join two hollow core doors
>build a torsion box

[Anonymous No.1575141]

Red / green : Check
Copper wire : ?
Copper wire inside plastic, wraped with copper wire: ?

yesterday I ended up breaking the plug, I don't know how but got myself a new one, but this time its a different model and Im really lost this time.

[Anonymous No.1575165]

>>1574778
>>1575141
I just saw your reply, thanks.

[Anonymous No.1575213]

>>1575141
-what brand is your headset.
-do you have a multimeter
-can you solder

> I don't know how but got myself a new one, but this time its a different model
this is the correct plug you need TRRS

What is confusing is you appear to be missing a wire. Is one of the copper wires thicker or different from the other?

[Anonymous No.1575220]

>>1573259
You probably aren't done yet. Something made that cap pop...

[Anonymous No.1575222]

>>1574112
Not to mention the right cheek is broke clear off.

[Anonymous No.1575235]

>>1575220
>You probably aren't done yet. Something made that cap pop...
He asked specifically about the cap replacement, not PS repair.
>>1575222
>Not to mention the right cheek is broke clear off.
could easily be due to age and manufacturer of cap

[Anonymous No.1575252]

>>1575213
Jbl
no
yes

yes and no, one of the copper *strings* comes inside a plastic wire that at the same time comes wrapped in copper
the other one is just copper.

(I really don't know the propper terms in english but I think you'll get it.)

[Anonymous No.1575261]

How do I remove the legs off the bottom of this chair? I want to reuse the casters, but I can use the whole leg too if that is how it comes off. Pic 1/3

[Anonymous No.1575262]

>>1575261
2/3

[Anonymous No.1575265]

>>1575262
3/3

[Anonymous No.1575268]

Suelta el cilindro desde la silla, remuebe esos 4 pernos que estan debado de la base de esta.
El soltar esa pieza, te quedara el cilindro de aire comprimido expuesto, por lo cual debes darle un golpe hacia abajo con una maza, debe ser un golpe certero, para no destruir el cilindro.
Puedes usar antes wd 40 para soltar los metales agripados, y usar una tablilla en la parte de arriba donde vas a dar el golpe para no machacar el pibole del cilindro

[Anonymous No.1575270]

>>1575081
pls respond

[Anonymous No.1575272]

>>1575261
>>1575262
>>1575265
they are probably pressed in

[Anonymous No.1575277]

Hey my dudes, I have just had this big ass water tank delivered, the guys said they would fit all the fittings for me but it turns out they didn't fit the fucking shut off valve, the most important piece. Since this tank hold like 25,000 litres I only really have one chance to do it because otherwise I lose a shitload of trucked in water. The fitting is brass and the valve looks like galvanised steel. How should I be sealing this? Hemp and grease? PTFE tape?

[Anonymous No.1575297]

>>1575252
> one of the copper *strings* comes inside a plastic wire that at the same time comes wrapped in copper

This is the microphone wire. the center wire is the positive, and the copper mesh around it in the ground.

This is how you strip and peel it to solder: https://www.youtube.com/watch?v=DemH3kBU33Q

but we don't know where to solder it yet!

So we know partial order:

green to tip
red to ring

The problem is we don't know if microphone is on ring or sleeve. let me know if that makes sense. Give me headphone model number if possible. If we had a multi-meter we could test for continuity to determine where the ground goes, and where the microphone goes....

I have to go for a bit, but my next step would be to either get a multimeter / continuity tester, figure out a way to test continuity without multi meter, or find the pin-out diagram for JBL headset with microphone.

I have some ideas, but have to go for a bit to put kids to bed.

[Anonymous No.1575308]

How would I go about machining this tool? Turn + face 2 pieces of bar stock to a thin diameter, taper it down to a 5/16ths shank then mill a slot in the end? If I'm using this tool for relatively light work (typewriter repair), would it be excessive to weld the two pieces together or would it be a better idea to stick with soldering?
>t. newfag who sometimes watches This Old Tony

[Anonymous No.1575309]

>>1575308
FUCK i forgot the image. shit. first post on this board and i've fucked it!

[Anonymous No.1575383]

>>1575261
>How do I remove the legs off the bottom of this chair?

just hit them from the top. use a block of wood between the hammer and wheel so you dont dent them.

[Anonymous No.1575384]

>>1575261
>How do I remove the legs off the bottom of this chair?

just hit them from the top. use a block of wood between the hammer and wheel so you dont dent them.
the yellow ring in the pic is a compression ring, which is whats keeping them in place.

[Anonymous No.1575385]

>>1575308
If you don't have brazing equipment or a tig welder, try loctite:
https://www.henkel-adhesives.com/co/en/products/industrial-adhesives/retaining-compounds.html

[Anonymous No.1575455]

Are Stanley's any decent for a socket/spanner set?

https://www.supercheapauto.com.au/p/stanley-stanley-tool-kit---132-piece/222143.html

[Anonymous No.1575493]

What would be a good pairing of oil + grease for lubricating relatively delicate machinery? Was thinking tri-flow synthetic grease and a bottle of Hoppe's No. 9

[Anonymous No.1575511]

Watching some tool restorations on jewtube, I got a nudge for wanting to start some work myself. My knowledge of mechanics, however, is limited to putting together ikea-type furniture.
What type of handiwork is easiest of getting into? Without a large capital for specialty tools and a whole lot of room to work.

[Anonymous No.1575514]

>>1575308
>Turn + face 2 pieces of bar stock to a thin diameter, taper it down to a 5/16ths shank then mill a slot in the end?
get a piece of drill rod the diameter you want and the length of the tool plus enough for a handle as one piece.
slot the end for the tool and heat to bend an L on the other end for the handle

[Anonymous No.1575529]

>>1575262

[Anonymous No.1575824]

do i need any special glue to fix pic related? i have a hot glue gun laying around, would that work? anyone tried it?

[Anonymous No.1575919]

>>1575511
ropemaking, knotworking. carpentry. sewing hoods and stuff.

[Anonymous No.1575921]

>>1575824
that won't work. it wont bond. my first thought is your screwed, because that glue has some special properties. it's elastic and shit.

[Anonymous No.1575945]

what's the best way of destroying larger bearings? Degreaser in the grease fitting?

[Anonymous No.1575951]

What would be the best way to power a go kart without an engine: Pedals or windup? It’s made from pallets and wire spools.

[Bepperoni No.1575953]

>>1575455
Plenty gud for around the house and garage.

>>1575824
Pic related. I doubt the hot glue will work. Super glue works for awhile but eventually cracks.

[Anonymous No.1575955]

I have to take off half an inch from a live edge slab with hand tools, how fucked am I?
How are people supposed to get into woodworking without garages and power tools?

[Anonymous No.1575956]

>>1575951
if you're going downhill then throw a very heavy ball downhill

[Anonymous No.1575970]

>>1575955
>How are people supposed to get into woodworking without garages and power tools?

all you need to make the thing at the top is the stuff at the bottom.

[Anonymous No.1575971]

>>1575955
>How are people supposed to get into woodworking without garages and power tools?

You get a job, you work hard, then you buy a house with a garage.

[Anonymous No.1575973]

Fairly new to using a jigsaw,. Just wanted to know if it was normal when making circular cuts to get an angle to the cut itself.

As in when im cutting and turning into the circle pattern, the blade will angle slightly outward giving the finished cut an angle from the top to bottom of the cut.


Didn't know if that was normal, or just a sign of a shitty jigsaw.

[Anonymous No.1575978]

>>1575973

shitty blades, or operator error, like going too fast.

[Anonymous No.1575981]

>>1575978
Im using cheap AF blades so that's probably part of it along with my shitty use.

Any recommendations on budget blades brands that aren't shit?

[Bepperoni No.1575985]

>>1575973
>budget blades
The thing with saw blades is that you can buy a cheap blade for 1/3 the price of a good one, but it will only last 1/3 as long.

[Anonymous No.1575987]

>>1575981
>budget
>aren't shit
Pick one. Sorry to say, unless you find some used/open box/ clearance that is what you are going to have to deal with. If they are cheap and new they are shit. Hell, just because you spend a lot doesn't mean they will be great either. What is your budget and what are you trying to cut?

You can work around the issue until you find some good ones though. Don't cut right up to the line. Leave a bit of space and then sand it down to where it needs to be. Belt sanders are good at this. You mount it to your workbench and hold the work to it. Like a poor man's picture related.

[Anonymous No.1576003]

I'm going to paint my whole apartment off white and redo the trim white. Currently the walls are light blue, light yellow, light green, and the kitchen cabinets are standard green. Trim is all white but scuffed. I'd like to do the walls in one coat and I'm seeing sherwin williams recommended a lot, is that my best bet? Should I wash the walls or is that unnecessary?

[Anonymous No.1576011]

>>1576003
>Should I wash the walls
Depends. Has anyone smoked in the place, used a lot of candles, or are they generally filthy? Even just having a lot of dust can cause issues. If they are clean you can probably skip that step.

>I'd like to do the walls in one coat
Good luck with that. My general rule is you can only do one coat when you are painting something the same color as it was before. Any significant color change would require a primer at the very least. I list to do at least one coat of a good primer and two coats of paint. If it was a serious color change, like black to white, I'd go two and two. Maybe even two and three.

[Anonymous No.1576033]

>>1575970
I feel like there's a disproportionate amount of effort required to just get something flat and to dimension compared to carving out wolves and scrolls in wood

[Anonymous No.1576050]

>>1575987
Cutting mostly 1" to 1.5" wood, and whatever it takes to get something that works basically

[Anonymous No.1576062]

>>1573347
what the fucking fuck, you should have bought the coated torx screws and the high quality driver for them, then you wouldn't have that phillips bullshit problem

[Anonymous No.1576064]

>>1573985
annular cutter?

[Anonymous No.1576070]

>>1576050
Gonna need more detail than that. What kind of wood? What kind of cuts? That is what is used to pick the blades you need. Softer wood can be cut with larger teeth which does a more aggressive and faster cut. Harder woods need to use finer teeth for a slower cut. You also risk burning the wood if it is harder. If you are doing a very tight curve you want a thinner blade.

Tight curves in harder wood may mean that you can't do it in one pass. Harder wood often can't be cut with a thinner blade without it bending so you have to use a thicker one. That means you can't cut a tight curve without forcing it. That can cause bad things to happen, like burnt hood, broken blades or overheated motors. So, you use a thicker blade, relief cuts, and multiple passes to get the job done.

[Anonymous No.1576077]

>>1574433
Laser cutter here.

Most places that offer laser cutting services due so to metal. Counter-intuitively, it can be more difficult for a laser to cut through plastic than steel, depending on the wavelength.

Lasers that are good at cutting plastics are generally not great at cutting steel and vice-versa, since there is not a lot of money in plastics most shops simply focus on cutting metal.

A good place to look is a trophy shop. They will usually have lasers that are good for engraving. Engraving lasers typically are powerful enough to cut through plastics, and with a bulk order you will be able to get a cheaper cost. Save the company you order from some time and provide a 1:1 scaled .DXF file. Ask them whether or not they would like you to supply material, a lot of shops will have a preference.

Don't discount water-jet cutting as an alternative. If you are looking for a simple square your best bet might just be a table saw and sand paper for the edges.

AMA about laser cutting.

[Anonymous No.1576101]

>>1575297
>This is the microphone wire. the center wire is the positive, and the copper mesh around it in the ground.
That's right!

I saw some diagrams and tried to see if the order was correct, and it was indeed, thanks !

[Bepperoni No.1576110]

Any /o/ type people here? Best scan tool for <$100?

Have one of those $40 HF Zurichs and was pissed off on a job this weekend because basically all I could do was pull codes on this 2003 Chebby when I really wanted to see what the computer was showing for engine temps. I want something that will stream live data and show me values of these sensors in real time. Would prefer to get one of the known brands as well. Graphing and the ABS/SRS would be a plus.

I think pic related is $70 and looks straight if it will show me readings from sensors like coolant temp, but I’m not 100% sure. The next model up is around $120 with airbag light support and stuff/

[Anonymous No.1576117]

>>1575042

Jesus, don't hack that up into some hipster device, they're rare and valuable. Sell it on ebay.

[Anonymous No.1576119]

>>1576110
Have you seen that bluedriver one? Haven't bought one yet but I've seen it recommended many times

[Anonymous No.1576120]

I was sharpening my lawnmower blade today and realized I could easily make one out of O1 tool steel and give it a proper hardness and temper.

Do you think there is a market for artisinal handmade lawnmower blades?

[Anonymous No.1576123]

>>1576120
no, I even considered surface grinding mine to have a perfect sharp edge

but it's a lawn mower blade and it eats sticks and leaves so the edge shouldn't be too sharp

[Anonymous No.1576124]

>>1575042
Don't be a dumb fuck. Sell it and buy a gaming headset and some good scotch with the proceeds.

https://www.ebay.com/itm/Vintage-Turner-2-SSB-Transistorized-Microphone-Desktop-for-CB-Ham-Radio-4-pin/143174795773?hash=item2155e201fd:g:B8cAAOSw9GdcjWTB

[Anonymous No.1576127]

what do they put inside weighted blankets that make them so heavy and comfy?

[Bepperoni No.1576134]

>>1576119
Is that a bluetooth one? I didn’t really want to go that route, I like having an actual tool.

Anyway I grabbed pic related. They gave me another $5 off so it was $109. I think I could’ve gotten one with live data for $50-$80 from another company, but looks like this can give me info on ABS-SRS stuff as well and I don’t want to be kicking myself in the ass for not spendng the extra $30. I should be able to get support from Autel for a few years too which wouldn’t be the case with some of the cheap ass ones.

[Anonymous No.1576141]

is there any good, free cad software that comes with the ability to see if your parts fit together and work?

[Anonymous No.1576147]

>>1576127
probably lead, it's ~$1 per kilogram.

[Anonymous No.1576148]

>>1576120
This is a terrible idea. Lawnmower blades are dumb, heavy chunks of soft steel for good reason. Grass isn't what's dulling your blade. What's dulling it are all the other things it encounters that would break a finely tempered blade with a hard edge...

[Anonymous No.1576149]

>>1576033
That's because you're trying to be precise when it comes to making things flat and to dimension. There is no "right" way to make a wolf sculpture. There IS a right way to make a table.

[Bepperoni No.1576150]

>>1576147
Really? I got one for xmas and didn’t see a bunch of Commiefornia cancer warnings. Somehow I don’t think Sharper Image would load a ton of lead pellets on you for 8hrs a day. Maybe a cheap Chinese knockoff though...

Fwiw I can’t even sleep under that thing. It feels like somebody tucked you in too tight. The girlfriend agrees it’s too much.

[Anonymous No.1576151]

>>1576150
Weigh it, then measure it's volume. That should tell you what it is. The cloth will be negligible compared to the weights.

[Bepperoni No.1576154]

>>1576151
Just checked, it’s depleted uranium.

[Anonymous No.1576161]

>>1576154
oh shit nigga, don't tell North Korea

[Anonymous No.1576200]

>>1575108
This might seem odd but have you looked around for people selling old doors? You can do some neat stuff to them after some sanding down. The hole for the door knob is pretty good for cable management :)

I got a store near me that is sorta like a handyman store and they had a ton to choose from (like around a thousand of them I swear)

[Anonymous No.1576222]

I'm making a house. I'm doing most od the work by myself and with the help of my dad(guy knows pretty much everthing be it roofing, plumbing, tileing etc.). One thing I'm not sure about is should I put tiles on my kichen walls or go with vinyl? Vinyl seem both cheaper and simpler but I never worked with it so I'm not sure how good is it actually. How durable is it and how long would it last?

[Milwaukee No.1576295]

>>1575277

i swear to the love of all that is holy use some thread tape and wrap it properly. the liquid shit is fucking garbage.

watch a video too but ill try to explain it.

take the fitting in your left hand.

take the tape in your right

pointing finger goes through hole of roll

thumb rests on tape reel to provide rolling resistance

okay now the end of the tape should be on the back of the roll, not the front. so when you pull it around the fitting it tightens and not loosens the tape on the roll.

okay pt2. with fitting in left hand, and its male thread end pointing towards your right hand, drape the loose end of the tape youre holding with your right hand in the orientation described above, over the top of the fitting and hold it in place with the thumb of your left hand.

this allows you to now pull the tape around the fitting tightly into the root of the threads, do a few good tight wraps.

if you go the wrong way the tape will loosen off as you tighten the fitting and you might as well not even use it in the first place.

anyone who says to use the liquid should be disregarded.

use gas rated tape only, no matter the application (pure white tape is shit but still better than liquid sealant)

pic related. never fails. ever.

[Anonymous No.1576311]

>>1576101
cool. hope it works out

[Anonymous No.1576320]

Hello just bought a forge but the outlet is not the as in my country (France) which use type F or type E. There is two male at their place but it seems that the female one have a dick inside of it

[Anonymous No.1576441]

>>1573385
Acrylic sheets are sold at Home Despot.

[Anonymous No.1576448]

>>1576320
Does the "dick" press in? It might be a killswitch to ensure the device is grounded. Otherwise it might be a proprietary outlet...

https://www.worldstandards.eu/electricity/plugs-and-sockets/

[Anonymous No.1576463]

>>1576320
damn anon cut your nails

[Anonymous No.1576497]

Can I make a double dash cam for my hatchback with zero experience in electronics (except learning "V = IR" in high-school physics class)?

Based on some rudimentary research:
>Some kind of case (I've got a lot of spare cardboard boxes...)
>Raspberry Pi 2 B (with Raspbian and ffmpeg on a 64-GB memory card; Velcroed in its case to the back of my headrest)
>Cheap USB camera (facing rear; mounted so that it protrudes sideways from the back of my headrest out into the middle of the car)
>Raspberry Pi camera (facing front; Velcroed onto the back of the USB camera, maybe in a camera mount)
>Two LED latch buttons (each with a 220-ohm resistor on the LED circuit; each button controls one camera; Pi shuts off if both buttons are off)
>USB battery and USB-to-μUSB cord
Did I miss anything?

My car's seats have protective covers on them, so gluing patches of Velcro to the covers should be fine.
I live in a state where a camera literally on your dashboard is an illegal windshield obstruction.

[Anonymous No.1576499]

>>1576497
Clarification: The USB camera's mount would be Velcroed to either the case or the headrest.

[Anonymous No.1576601]

I just bought a cheap cordless drill whose battery doesn't charge up properly. It's supposed to be a 10.8 V battery. After charging it a while the green LED in the charger lit up, indicating full charge, but I only measured 1,34 V between the terminals with a multimeter. Letting it stay plugged in for hours didn't increase the voltage.

I opened the battery and it contains three Li-ion cells. There's no obvious broken wiring or anything like that visible. What could be the problem?

[Anonymous No.1576611]

Where can I get super cheap micron gauge for vacuum?
I just want to test how bad is fridge compressor as vacuum pump, and if it can be used to vacuum refrigerant lines.

[Anonymous No.1576613]

>>1576601
Check voltage on each cell.
They should be between 2.8-4.2V.
Probably smarts in battery died, and this is why it is misbehaving.

[Anonymous No.1576622]

>>1576613
They're 0.7V, 1.16V and 0.7V with the highest voltage in the middle cell out of the three cells.
Still measuring only 1.4V between the battery terminals though.

[Anonymous No.1576655]

>>1576622
Something bad happened to smarts.
Or batteries are so bad, it turned off.
Try charging each cell with lab bench supply (4.0V @ 250-500 mA) or with TP5046 (or how it is called) li-po module from alie

[Anonymous No.1576666]

>>1574110
Blast it with piss.

[Anonymous No.1576674]

>>1575824
I have succesfuly used a variety of glues to reattach shoe soles, including glue for PVC pipes and hot glue.
For the hot glue I used a hot air gun to thoughly melt and spread it on the sole, and also heat the matching part on the other side of the shoe. Just using the glue gun you'd have to let it heat throughly before using and be quick about it.
When using a glue that sets, clamp it firmly together, I use clothespins.

[Anonymous No.1576676]

>>1575970
Plus a hammer, or at least a rock to hit them with.

[Anonymous No.1576687]

>>1576601
>I just bought a cheap cordless drill whose battery doesn't charge up properly.
Ask for a replacement or refund.
>I opened the battery and it contains three Li-ion cells.
I sure hope you can close it back up without any signs it has been oppened.

Could be the charger, could be the battery pack.
That style of dril has three contacts, [-], [C], and [+]. There should be marking on the battery, charger or both. You draw power (discharge) frpm - and +, and charge with - and C. The charge should provide ~13.0V. You can check this with a multimeter.

[Anonymous No.1576712]

>>1576676
eh, you can use the heel of your palm

[Anonymous No.1576713]

My folks gave me a Ryobi cordless drill kit with two batteries and charger for xmas. I like the idea of swapping batteries between various tools, but I'm curious about the quality of different brands. Can some nice, experienced anons give me their ranking of the various cordless tools brand, ie; Ryobi, Ozito, DeWalt, Makita, AEG, and Bosch and any strengths/weaknesses of particular brands?

[Anonymous No.1576740]

What code am I violating if i just buy an extension cord and splice it onto an appliance to fix a broken cord?
Specifically, a portable dishwasher. 16 gauge.

It is cheaper to buy an extension cord and chop off one end than buy the actual wire and an end.

[Anonymous No.1576746]

>>1576740
That's exactly what I did. I used a high-temp insulation, heavy gauge extension cord to wire up an appliance.
Fuck the police if that's against code.

[Anonymous No.1576750]

I was trying to repair my xbox one controller, but I think I fucked it up. I ended up taking some of the iron that makes the connections, as you can see in the picture. Is this unrepairable now???

[Anonymous No.1576752]

>>1576750
no, just resolder all the connections.

[Anonymous No.1576753]

>>1576752
OK. I will try it.

[Anonymous No.1576766]

>>1576750
See those pads that don't have metal on them?

You ripped the pads off, you are fucked.

[Anonymous No.1576767]

>>1576766
and can't I replace them?

[Anonymous No.1576768]

>>1576767
Do you have extremely fine unjacketed copper wire the width of the smallest trace, a soldering iron with a microsoldering tip, and the ability to teleport that wire into a multilayer circuitboard?

[Anonymous No.1576772]

>>1576768
No. I guess I need to find another board, then.

[Anonymous No.1576778]

what do I do about an ungrounded phone line? my home phone has two cordless phones and the main base causes a humming noise in my audio system one floor above the phone cradle. a person or animal walking between the two causes the humming to cease. is this something that the phone company needs to resolve or can I fix it somehow? the phone cradle's power supply doesn't have a ground btw

[Anonymous No.1576779]

what’s the closest i can feasably get to building a (digital) computer from scratch? buying an fpga and fucking around? what would that be like?

[Anonymous No.1576780]

>>1576779
worth noting i mean computer + os. i wanna do something like templeos but making something’s ljke that on fpga or similar homemade cpu thing sounds cool af

[Anonymous No.1576797]

>>1576778
>a person or animal walking between the two causes the humming to cease

that suggests the noise in coming in thru radio transmission, not thru the power lines. one thing you can try is to short out any inputs on the stereo that arent used, and which may be acting as receivers. take 2 phono cords, short out the far ends, and plug them into various inputs: the 2 phono inputs, AUX inputs, tape inputs, etc etc. if no joy, short out the AM and FM antennas.

you can ground the phone by wrapping a wire around the power jack and touching the other end to a screw on a grounded power socket. but i dont think that'll help.

[Anonymous No.1576801]

>>1576779
>what’s the closest i can feasably get to building a (digital) computer from scratch?

based on my experience, i'd use a reference design, then simplify it a bit, then ''borrow'' the fundamental pieces of code needed to read the keyboard, display text and graphics, make sound, do I/O, and do floating point. then, i'd find an assembler and write all the other code.

this is one example i built, based on a small 8-bit computer similar to the C-64. today, i'd probably clone a RasPi or similar.

[Anonymous No.1576804]

>>1576797
my "audio system" is simply a 2.1 computer speaker system. but knowing that it's a radio interference issue helps me narrow things down. I'm very grateful for your help, and I'll do my best to follow up with anything that I found out

[Anonymous No.1576807]

>>1576779
You can check out some computer architecture course material. This usually has you building a simple MIPS computer using an FPGA .

Also check out logisim, it's a great easy to use logic simulator that let's you build stuff out of basic logic elements. So you can try out your design with it first.

[Anonymous No.1576853]

>>1576448
No it didn't press in, just ended up buying a new outlet and replaced the old one. Thanks though

[Anonymous No.1576937]

hello,
#define SWITCH_GetValue() do { digitalRead(SWITCH_PIN); } while(0)
is this something I can do in Arduino ? Yes this is PIC-like code, I just want to do a smooth transition between the world of Arduino and raw micro-controler dev

[Anonymous No.1576939]

>>1576937
Arduino is just C++, yeah you can do that.

[Anonymous No.1576948]

>>1576939
Thanks!

[Anonymous No.1576986]

I need a throw ting head type tool (angle grinder?) butnsomething with a rotating angle head, doesn’t have to be strong it’s just for polishing glass in cars; I will be attaching various cloths to it for cleaning and polishing work. Any suggestions in the 50-75 range? Cordless

[Anonymous No.1576989]

>>1576986
*rotating head

[Anonymous No.1577003]

>>1576674
>For the hot glue I used a hot air gun to thoughly melt and spread it on the sole
thanks. i have no hot air gun but i'll see if a hair drier is enough

[Anonymous No.1577016]

Are there any worth while projects to create a cheap gsm phone? I don't care if I'm carrying around a literal brick and look like a terrorist.

[Anonymous No.1577018]

Can I take the valves from vac-bags and put them in sealed boxes to make a vacuum dry box? Or, can I buy just the valves from some chinese seller?

[Anonymous No.1577023]

>>1577016
Yes there are

https://learn.adafruit.com/arduin-o-phone-arduino-powered-diy-cellphone/overview

[Anonymous No.1577038]

>>1576778
>what do I do about an ungrounded phone line?
Phone lines are supposed to be ungrounded.
Grounding one side of the line will probably induce hum.

[Anonymous No.1577040]

>>1576986

[Anonymous No.1577053]

>>1575973
>>1575978
>>1575981

I thought if you rotated like that you would snap the blade.

[Anonymous No.1577059]

>>1577053
If I'm pulling up old asbestos floor tiles and theres black mastic under it, can the new tile adhesive stick right to that? or do I need to remove it?

[Anonymous No.1577097]

>>1577018
I'd like some one way valves for my oblong cans filled with wood finish

[Anonymous No.1577101]

>>1576768
>>1576772
>>1576767
>>1576766
>>1576750
Louis Rossmann shows you how to do it in his macfag repair videos. You need to solder a wire between point A and point B, that the original solder pads would have connected.
Sometimes you need to scratch up the solder resist to get to some copper.
Sometimes you don't have access to any copper at all and you need to solder directly to the pins on the components.

Of course, if you can't figure out what components the original solder pads connected using a schematic or just by following the metal lines, then you're fucked and there's nothing you can do about it.

[Anonymous No.1577104]

>>1577097
>I'd like some one way valves for my oblong cans filled with wood finish

[Anonymous No.1577111]

>>1576497
>>1576499
Can anybody point out any errors I've made? Or is this more >>>/g/ than /diy/?

Stuff to be bought:
- Raspberry Pi 3B or 3B+: $35 (https://www.adafruit.com/product/3055 https://www.adafruit.com/product/3775))
- - Raspbian: Free
- - ffmpeg or raspivid: Free
- - Clear case base (hats don't fit under a cover; maybe add a cardboard box): $5 (https://www.adafruit.com/product/2253))
- - 64-GB uSD card: $0
- Raspberry Pi Camera 2: $30 (https://www.adafruit.com/product/3099))
- - Mount: $5 (https://www.adafruit.com/product/1434))
- - 3-ft cable: $4 (https://www.adafruit.com/product/2143))
- Uninterruptible power supply (includes on/off button): $20 (https://www.adafruit.com/product/4114))
- - Socket riser header: $2 (https://www.adafruit.com/product/4079))
- - 2.5-ft USB-to-uUSB cord: $0
- - - Car-to-USB adapter (5 V, 2.4 A): $9 (https://www.newegg.com/Product/Product.aspx?Item=N82E16875922049))
- - Li-ion JST battery pack (3.7 V, 2.2 Ah; smallest capable of 2.4 A): $10 (https://www.adafruit.com/product/1781))
- - - USB-to-pins cord: $1 (https://www.adafruit.com/product/3814))
- - - uUSB-to-JST charger: $7 (https://www.adafruit.com/product/1904))
- PiRTC clock (includes riser): $6 (https://www.adafruit.com/product/3386))
- - CR1220 battery: $1 (https://www.adafruit.com/product/380))
TOTAL COST: $135

Not included:
Apparatus for securing all this stuff on that little box in the middle of my car
- The camera should be at eye level. (A dashboard camera is an illegal windshield obstruction in my state.)
Quarter-inch Allen wrench (for camera mount; not super-necessary)

This is comparable to Newegg models, which cost $100 on sale.

[Anonymous No.1577115]

>>1577111
>USB-to-pins cord
Whoops, that should read "JST-to-pins cord".

[Anonymous No.1577163]

>>1576746
>>1576740
It's the insurance company denying your claim because of some bullshit excuse.

[Anonymous No.1577166]

>>1577163
I find it hard to believe an insurance cord can tell an extension cord from a storebought pigtail, especially if the gauge is correct.

[Anonymous No.1577168]

>>1577166
yeah I don't know - I guess I was picturing a thick orange extension cord, spliced to half of the original cord. For all I know the cord could be completely to spec if you attached it properly, was the proper length, etc.

[Anonymous No.1577174]

I don't understand what function the white ground wire has.

With this wishbone set up, you have a green/brown to right light, yellow/brown to left light. So - what is the white wire grounding?

I mean, I get if you ran a long white wire from your grounding spot to the lights. But that isn't what happens here. The lights are self grounding on the frame.

[Anonymous No.1577189]

>>1577174
>what is the white wire grounding?
The white wire 'grounds' the frame of the trailer.
The corresponding pin on the vehicle connector should have it's wire connected to the frame of the vehicle.
>>1577174
>The lights are self grounding on the frame.
The frame of the trailer connects to the frame of the vehicle through the ball and socket.
This isn't an ideal connection for electrical current.
Having a wire bonded to the frame of the trailer mated to a wire bonded to the frame of the vehicle ensures good electrical connection even when the trailer coupling is wiggling and bumping around with the necessary slack to allow movement.

[Anonymous No.1577192]

>>1577189
holy shit - that never occursed to me that the trailer needed grounding. Why isn't the trailer it's own ground? If you can ground something to the vehicle frame, isn't that exactly the same as a trailer frame?

[Anonymous No.1577215]

>>1577192
>If you can ground something to the vehicle frame, isn't that exactly the same as a trailer frame?
Only if the frames are connected electrically
Current leaves positive post of the battery > goes to the contact on the bulb > (through the filament) >
from shell of lamp to frame of vehicle > from frame back to negative terminal of the battery.
If the shell of the lamp doesn't connect to the frame that the battery connects to, it doesn't count.

[Anonymous No.1577217]

I replaced my analog thermostat for baseboard heat with this digital one. It works great.

The new one doesnt have a ground connection to the thermostat like the old one. I capped the ground wire inside the wall box.

Am i fucked?

[Anonymous No.1577235]

>>1577217

if you didn't connect the ground you are asking for electrocution or a house fire. why do people like you mess with electricity?

[Bepperoni No.1577246]

I got a $50 Amazon gift card.

Should I get a Chinesium hot air-soldering station, another ratchet, or a bunch of assorted diodes and transistors I will never use?

[Anonymous No.1577309]

>>1577246
dildos and translators for sure

[Anonymous No.1577314]

>>1577215
why not - electrons flow from black to red - why does it matter where those electrons came from?

[Anonymous No.1577326]

>>1577235
>asking for electrocution or a house fire

dont listen to this troll. you dont need a ground coz everything you touch is plastic, so you're isolated.

[Anonymous No.1577344]

>>1576807
thanks anon! so like hypothetically if i get a circuit design down and one day it’s possible to, say, 3d print chips i could (again, hypothetically) do that from the circuits ive designed on the fpga or in logism, etc, right? and from there of course i could implement my own ISA on my own chip and continue the abstraction layers up to a full homegrown lisp-machine-like system, correct?

it would just be cool to physically go from voltages to a functioning OS, despite how unrealistic it is

[Anonymous No.1577346]

>>1576801
wow this is awesome, could you also check my post directly above this one about going from voltages to an OS?

[Anonymous No.1577347]

what’s the /diy/sci/ curriculum?

[Anonymous No.1577350]

how to learn about motors? i want to know how to fix lawn mowers, chain saws, dirt bikes etc

[Anonymous No.1577352]

>>1577344
>thanks anon! so like hypothetically if i get a circuit design down and one day it’s possible to, say, 3d print chips i could (again, hypothetically) do that from the circuits ive designed on the fpga or in logism, etc, right?
It'll never happen, but hypothetically, yes.
By the time 3d printing ever gets good enough to synthesize microchips, then today's top-of-the-line $50k FPGAs will look like as antiquated as 8-bit processors look to us now. Because by then the top manufacturers will be decades ahead and they'll also have access to the same nanotech manufacturing.

[Anonymous No.1577353]

>>1577350
get a dirtbike, get a clymer or haynes manual for the dirtbike, take it apart and put it back together again.
>>1577347
We have a curriculum? I say read the 3 books of the Feynman Lectures on Physics

[Anonymous No.1577357]

>>1577352
i don’t really care if it happens or not, though i’d certainly prefer that it does and that its the price of a cup of coffee to print a chip. i just want to have the knowledge and skills that come with being able to do such a project, so am i on the right track?

[Anonymous No.1577358]

>>1577357
Yes you're on the right track. These days I don't think you need to spend any more than $100 to get an FPGA dev board that can run a soft-core processor.

[Anonymous No.1577369]

I need one of these and I don't mind taking it out of an existing machine. I need it for a car phone charger so it needs to handle 12v and 20mm long. What would have them? If I can't find one by tonight I'll just buy one tomorrow but I'd rather have it working today so I don't have to worry about it tomorrow.

[Anonymous No.1577372]

What's the best way to disassemble an old grainery (pic sorta related) with a gabled roof, without destroying too much of the wood? The thing is slowly falling apart so I'm not too keen on standing on the roof. I want to disassemble the entire structure and sell the wood to craft enthusiasts or people looking for old lumber for their house, so I want to avoid damaging the wood if possible.

Also: what would be my best bet for getting the most money for the wood? Craigslist?

[Milwaukee No.1577398]

>>1577369

digital multimeters
some alarm clocks
vehicles near the battery
cordless drill chargers

called a BUSS fuse

you know you can just join the 2 posts together, skipping the fuse altogether. not the safest way to go about things but that parts up to you.

that or take the spare spade type ATC fuse from your car/truck/short bus' fuse panel and use a couple female spades

or take something like the AC/Heater motor fuse, windshield wiper fuse, dome lamps, somethihg you dont need and wont miss it if it doesnt work.

[Anonymous No.1577411]

>>1576750
>>1576766
>>1576767

You are fucked.

Take this as an important lesson to turn the temperature down when you are attempting to desolder, especially with surface mount parts on a PCB.

If you had only ripped up a single pad, I would suggest using 28 awg wire to make the connections you had accidentally terminated with the removal of the pad.

[Anonymous No.1577447]

>>1577372
Are you sure there's actually a market for old wood from a knackered shed, to make it worth your time?

[Bepperoni No.1577452]

>>1577309
I fucked up. The girl just got a new shitbox and I spent the whole weekend trying to make everything safe for her so I bought her one of those jumper packs instead of getting more Knipex for myself.

[Anonymous No.1577532]

I'm gearing up to build a house, but may have trouble getting a septic tank. I live in indiana if that matters, and my property has soil with a lot of clay. My dad says they probably won't let me get a regular septic tank, instead I'll probably have to get a mound system (expensive). However, there is an old small "barn" (uninsulated house with no utilities; has a foundation) on my property, which he says I could install a regular septic tank next to and claim that my grandfather had it put in back in the 70s, then build my house up against the barn and just use that.

My question: would they check to see if it had really been there for long? Would they look in the barn to see if it even had any plumbing or whatever? I'm game if it means not getting a mound system, but i don't want to pay for a septic + other crap and then have to get a mound system anyway AND deal with any fines or punishments or whatever. Am I giving the zoning assholes too much credit here?

[Anonymous No.1577536]

if capacitors act as an open ciecuit with DC, then what function do they serve in a DC circuit board? I see one after a rectifier which makes no sense. wouldnt it just act as an open circuit and prevent anything from happening?

[Anonymous No.1577553]

>>1577372
absolutely. "upcycled" and "reclaimed" wood is fucking huge among the tryhard decadent scum you'd normally find in a starbucks. women buy 2 foot long planks so they can write "love" on it with chalk and hang it on their wall. people buy beams and larger pieces of wood for fireplace mantles, and build furniture out of it.

[Anonymous No.1577556]

>>1577553
meant for >>1577447

[Anonymous No.1577579]

>>1577217
>I replaced my analog
>anal

LOL

[Anonymous No.1577580]

Are totally enclosed sheds considered damp locations per NEC in burgerland?

[Anonymous No.1577582]

>>1577536
>what function do they serve in a DC circuit board?
Energy storage, see pic. Dotted is rectifier output voltage without capacitor, red line is with capacitor.

[Anonymous No.1577584]

>>1577536

Hi. I respond to trolls as if they were normal people. The simplest answer is that capacitors tend to pass AC, and if the capacitor and the AC frequency are ok, the AC passes through easily. So in your example, ripple or transients on the DC will get shorted to ground and the resulting DC is cleaner and more stable.

[Anonymous No.1577680]

>>1577358
>>1577352
awesome, thanks anon

[Anonymous No.1577687]

I have a car problem (turns over but won't start). I don't know much about cars (I can change my tires, oil, filter, brakes, rotors and fluids and that's about it). I don't know anything about working with electricity beyond checking fuses and jumping a car (no wire checkers or voltage readers, etc).

I'm not quite asking for advice on my problem, but for advice on how to find resources and structure my time to solve the problem. I have the drivers manual, it's a 2003 mustang and I've read a few articles and watched a few videos. There's lots of different things it can be and I think I'll just go through the list and use process of elimination. I think the first thing I'm going to check is the spark plug (I haven't touched a spark plug in years).

[Anonymous No.1577691]

>>1577344
>despite how unrealistic it is
the only unrealistic part of making your own ICs is the licence cost for the design software.
any idiot with an ebeam deposition vacuum chamber, a photolithography exposer, a spinner and a few hotplates in a cleanroom can do it at home.

[Anonymous No.1577694]

>>1577687
Also, if you read the above, can you list out some essential tools I'll need for the troubleshooting process so I can snag those this week?

[Anonymous No.1577698]

>>1573246
I'm studying for an electronics test for a job I want. Any good sites with quizzes for...

>resistance calculations
>capacitance calculations
>scientific notation
>Boolean algebra
>How to read/use an oscilloscope

and other stuff like this? I have experience in electronics but haven't been working in that field for 5+ years so I want to review.

[Anonymous No.1577700]

>>1577687
ok well you need 3 things to make an engine run,
compression, fuel, spark.
you can check spark by taking a sparkplug out, hold the body to the engine so its grounded, turn the engine over, if its sparks than thats fine.
while the plug is out typically you can have a look in the hole and see or smell if fuel is getting into the cylinder, the ratio has to be good too so this one isn't that easy but its a start.
as for compression you can get kits that screw into the spark plug hole and turn the engine over it shows you the cylinder is holding a seal, or you can turn it over by hand and feel the pressure change.
if it has a computer and you can read the codes it might or might not help, i had a car that wouldn't start, computer reported problem with the immobilizer. the problem was some clown rebuilt the intake vvt wrong so there was no compression. computer never got to the stage where the starting handed over control to the cpu, cpu blamed immobilizer for not releasing control. have fun!!

[Anonymous No.1577704]

>>1577353
>We have a curriculum? I say read the 3 books of the Feynman Lectures on Physics
I don't know, I would hope so. I've been meaning to read Feyman's Lecture's for awhile now. I want to become a /diy/ god

[Anonymous No.1577722]

>>1577452
>new shitbox
>not getting dildos and translators
u dun goof

was nice of you tho

[Anonymous No.1577723]

>>1577372
>Craigslist
ebay too

[Anonymous No.1577746]

>>1577700
thanks for keeping it simple. the first three items I'd like to eliminate are blown fuses, spark plugs and fuel pump.

when you say
>hold the body to the engine so its grounded, turn the engine over, if its sparks than thats fine
you mean to disconnect the spark plug from the piston or whatever, but leave it plugged into it's electrical supply on the car, then turn the engine over to see if it sparks?

[Anonymous No.1577748]

>>1577746
also, I don't really know what it means to check the schraeder valve for fuel pressure, but i removed the cap and poked it with a screwdriver after turning the ignition on and off a few times and seemingly no pressure built up. I do hear a noise whenever i turn the ignition on though, like the fuel pump is working, but again no pressure that I could observe

[Anonymous No.1577750]

Realistically, would I be able to grow a lotus flower to give to my friend? Seems kind go difficult. I live in the Pacific Northwest if that makes a difference.
Google searches seem to tell me that's it's hard to actually come by good, quality lotus seeds. I don't suppose by some longshot anyone has experience growing lotus flowers and can give me some advice?

[Anonymous No.1577772]

>>1577746
>>1577748
so this time I turned the ignition on and off a few times, then took a small nail and actually poked the needle-like inner rod of the shraeder valve (previously, this was all covered by a rubber seal). To my surprise, I heard no hissing or gas smell that would imply there was fuel pressure building up, but I'm not sure I'm qualified to observe that. today I hope to complete the spark plug test, because if the sparkies are working i would put my money on it being the fuel pump not working.

also as an added bonus I discovered my cigarette lighter fuse is blown.

[Anonymous No.1577776]

can i make a multimeter for under $5? i have a raspberry pi and beaglebone black

[Bepperoni No.1577825]

>>1577722
Maybe I should get her the dildos instead because I really want to keep this thing. I have been wanting to get one for myself for a couple years but don’t want to spend the money.

[Anonymous No.1577827]

Anyone know where I can find resources on repairing saxophones?

[Bepperoni No.1577828]

>>1577776
You can get a free one from HF with the purchase of a 79¢ bag of zipties.

[Anonymous No.1577873]

>>1577748
>I do hear a noise whenever i turn the ignition on though, like the fuel pump is working,
The fuel pump should only run for a moment.
As soon as it builds up pressure it recognizes that and shuts off.
>>1577772
>I heard no hissing or gas smell that would imply there was fuel pressure building up
The fuel pump is in the fuel tank. 2003 model is old enough to have a clogged filter screen on the pick-up tube or a broken tube. Also, clogged inline fuel filter.
How much fuel is in the tank?

[Anonymous No.1577882]

Stupid theoretical question.
Let's say I have an air conditioner, which uses flare connections, and they were done poorly.
In which case it is more likely to leak:
>being turned on, so oil and freon travels through lines
>being turned off
Or in both cases shit is fucked, and you have to evacuate shit, and re-flare it?

[Anonymous No.1577894]

>>1577111
if you are storing image data to the sd card thats one thing but raspi will not be fast enough to take image from a usb cam and store it back onto usb disk.
MAYBE if the camera e.g. is c920 where it gives you encoded x264 instead of raw.
have a look around before you settle on raspi if you are adventurous, plenty of sbc available.

[Anonymous No.1577902]

>>1577746
fuses are easy you can kind of just look at them! but a multimeter set to resistance/continuity will tell you for sure. UNPLUG THEM FROM THE CAR FIRST!!

the spark plug test, you will have to disconnect the electrical supply to get it out, then when its out connect it electrically again.
the metal pin at the very top is the high voltage/tension connection and it gets the ground by the bottom threaded part touching the engine block which is grounded.
you might have to hold the lead/coil pack onto the plug sometimes there is a spring in there and it will pop off.
you said you had a manual for it? should cover removal/replacement but won't probably cover testing like i'm suggesting. desu its a little bit hillbillyish, the computer should really be able to tell you if its not sparking BUT it MIGHT only throw a code if the engine is running and missing a spark causes the engine to knock.

>>1577873
>2003 model is old enough to have a clogged filter screen on the pick-up tube or a broken tube.
absolutely if you aren't getting any fuel i would replace the fuel filter anyway. be very careful, try to do it outside and don't get trapped under a car covered in fuel and surrounded by flammable gas. its quite easy to do actually.

if you are feeling brave (assuming your car is fuel injection) you could maybe pull out the fuel rail and see if the injectors are jizzing fuel out when it turns over. i say this because i have only two bolts holding my fuel rail in plus cover, to get to the schrader valve i've already removed everything to pull it out anyway and its much more controlled and also checks the valves are working and not dribbly at the same time.

helps if you have a buddy for all this because its not easy to be inside the car and outside at the same time.

[Anonymous No.1577909]

>>1577828
holy shit nice anon, you're a hero

[Anonymous No.1577914]

>>1577902
>fuses are easy you can kind of just look at them
yes and I had just after posting that. thansk for all the tips anon, I'm oprdering my multimeter tonight.I'm gonna screw with the spark plug tomorrow

[Anonymous No.1577917]

>>1577902
posted prematurely, anyway in response to the latter half: I should say this car sat through the winter without being started, so perhaps that's worth taking into consideration. But I did run it last month or so I believe, had to jump it and the battery didn't hold a charge. But yeah, now it's just not starting and all I've FOR SURE eliminated from the list of possibilities is it being a fuse problem.

Anyway, thanks. And thanks >>1577873 too. I'm gonna have another go at it tomorrow. And in response to the anon I just linked:

>The fuel pump should only run for a moment.
it does, but again when I pushed the schraeder valve in afterward, nothing. but perhaps the gas fumes come out silently?

>How much fuel is in the tank?
A little over a gallon. And thanks for the tips about the clogged filter screen and such, I'll add that to the list of shit to cross off.

Do you guys think my best course of action tomorrow is to first verify that the spark plug is working? After that, I'll start more seriously looking into the fuel pump, if that's a reasonably intelligent plan.

[Anonymous No.1577925]

>>1577882
>you have to evacuate shit, and re-flare it?
depending on the size of the system and the length of the lines, you may be able to pump most of the gas into the condenser unit before re-doing the flares.
>>1577882
>In which case it is more likely to leak:
If it's not leaking don't worry about it.
Watch it and if it starts to leak do something then.
>if it ain't broke, don't fix it

[Anonymous No.1577926]

>>1577917
>A little over a gallon
It's out of fuel.

[Anonymous No.1577927]

>>1577926
don't joke like that anon.. surely it can run off a gallon and I didn't waste hours today, right?

[Anonymous No.1577930]

>>1577927
Put three gallons more into it.
Crank it up and ask that again.

[Anonymous No.1577942]

Hello, I've been watching videos to repair a leak in my sink, when the water valve is open to let the water flow, it spills from the faucet, when I push it, it stops
the problem is that mine doesn't works like the ones I've seen so I guess I'll have to disassemble the entire thing from below
The question is, what am I going to replace once its disassambled?

[Anonymous No.1577947]

>>1577942
The nuts on the bottom is holding the entire thing down, the chrome base, the knobs, everything.

If you take the nuts and hoses off the bottom then the whole thing pops off and you could replace the whole thing, you could get a really cheap one for like $50.

If you are trying to repair it, you need to pull that knob off the top, You could try sliding some wedges under it and lifting up, like screwdrivers.

[Anonymous No.1577968]

>>1577942
why buy parts?

[Anonymous No.1577986]

>>1577968
>>1577947

I didn't know these things were so cheap, but in any case, what would be the best replacement? so it can last a few years, this one has like 5 or 6 years.

[Anonymous No.1577996]

>>1573624
>actually owning an elliptical
Do you even lift?

[Anonymous No.1578004]

Would a cheap drill press from HF be worth it? They have one online for $135 but I don't want one that will crack after a few uses. Any recs on a simple table drill press?

[Anonymous No.1578064]

>>1577925
>if it ain't broke, don't fix it
I'm doing exactly this, I will wait for frost on line set before fixing anything.
>you may be able to pump most of the gas into the condenser unit before re-doing the flares.
But will it suck air through leak?

[Anonymous No.1578119]

>>1574735
Miter box and go slow

[Anonymous No.1578131]

>>1577986
The brand I showed is what I use.
I buy that model but with the pop-up drain for $5 more. You don't need the pop-up
The 'innards' are Delta compatible and made of brass.
I use plastic handles over metal because the metal ones always corrode.

Brand? just look for brass pipes and plastic handles with Delta style cartridges.
Chromed plastic shroud/cover is fine.

t. property maintenance

[Anonymous No.1578132]

Mold has gotten onto the silicone sealant in the shower, it can't just be scrubbed off so it's probably penetrated deeper.
How do I deal with it?

[Anonymous No.1578137]

>>1577882
>In which case it is more likely to leak:
Implying it isn't leaking now.>>1578064
>But will it suck air through leak?
Depends which side it's on and how long you pump into the condenser.
It will only suck air into the system it you allow it to get so low there is negative pressure on the low side when it's running.
When you decide to do it, put the manifold on the service ports and watch the pressure on the low side.
Shut the compressor off before it reaches 0 on the line set or when it's stressing the compressor.

[Anonymous No.1578138]

>>1578132
>How do I deal with it?
remove and replace

[Anonymous No.1578141]

>>1578138
Righty.
Then, how do I remove the sealant from the windows without scratching the shit out of them?

[Anonymous No.1578142]

>>1578064
>I will wait for frost on line set before fixing anything.
Clean the couplings off so they're dry. If it starts leaking you should be able to see oil on the fittings before it's low enough to frost up.
Even then, I'd tighten the fitting more to see if it stopped the leak before opening it. (use bubble juice to test)
>But will it suck air through leak?
Depends which side it's on and how long you pump into the condenser.
It will only suck air into the system it you allow it to get so low there is negative pressure on the low side when it's running.
When you decide to do it, put the manifold on the service ports and watch the pressure on the low side.
Shut the compressor off before it reaches 0 on the line set or when it's stressing the compressor.

[Anonymous No.1578160]

>>1578141
A regular razor blade is a good option if it’s regular plate glass and not that shit that got waves and bubbles in it and shit.

[Bepperoni No.1578163]

>>1578132

[Bepperoni No.1578164]

>>1578004
There’s a handful of people on here who have said that the thing is actually pretty solid, and if you order a good chuck for it the thing punches far above its proce range.

>>1577909
I know

[Anonymous No.1578194]

I do a little sculpting and i want to start making molds with proper degassing and compressing processes, instead of spending all my money on compressors and vac pumps that i might only use once a month should I just invest in 2 bike pumps and flip the seal on one to make it draw air? Do bike pumps even move air fast enough to be effective?

[Anonymous No.1578206]

>>1578142
>Clean the couplings off so they're dry. If it starts leaking you should be able to see oil on the fittings before it's low enough to frost up.
Thanks, I didn't know, that oil will leak before frosting.

[Anonymous No.1578218]

So as I see it, electrons only carry the energy for the circuit, and when they give that energy to the circuit they must go back to the battery/power source? For what reason

[Anonymous No.1578221]

>>1578218
It's more like a river and a water mill.
The energy isn't the water, it's how much and how strong the water flows. And after the water has flown through the mill it has to get upstream again.

[Anonymous No.1578278]

I'm trying to grind down a cut off wheel on my dremel so it will fit into a smaller space. what material should i do it on to grind it down the quickest?

[Anonymous No.1578280]

>>1578206
>oil will leak before frosting
Some of the system oil gets mixed with the refrigerant gas / liquid and is carried through the system.
When it leaks to the outside air the refrigerant evaporates quickly leaving a trace of oil behind.
This isn't 'always' the case but generally is.

[Anonymous No.1578281]

>>1578278
spin it against concrete until it reaches the size you want

[Anonymous No.1578286]

What the FUCK are is the part name or number for this the long tube in this pic (the skinny one that almost touches the barcode)? The vehicle in question is a 2017 Nissan Frontier.

I have a pinhole in it and it's leaking power steering fluid. Is this something I can solder / weld to patch up? I cannot for the life of me find the part, I'm pretty sure it's a "power steering rack line", but I still cannot find a site selling these.

[Anonymous No.1578289]

>>1578281
i did it against a brick and that worked. thanks

[Anonymous No.1578296]

>>1578286
nvm, finally found it here: https://parts.nissanusa.com/nissanparts/index.cfm?action=replacement&groupid=I&sectionid=492&jointvehid=21405&siteid=14

[Anonymous No.1578297]

>>1578286
It can probably be soldered. I wouldn't weld on it.
If it's really a pinhole, you may be able to repair it with J-B Weld.
Clean the area of all oil, grease, and paint.
Apply the epoxy all the way around the tube where the leak is.
I would add something like 'Spider Wire' or fiberglass fabric to the epoxy and apply a top coat over that.
All layers applied at the same time.

If you're 'handy' and have tools or are willing to buy them you may be able to make a new one.
Auto parts stores sell straight lengths of steel brake line.
Buy a brake line of the correct diameter and longer than the full length of the one you're replacing.
Cut the old line and save the fittings on the ends.
Cut the new line to length and replace the 'brake' fitting with the salvaged ends.
Use a flaring tool to fix the ends
Bend to shape and re-install
A flaring tool for double flares cost ~$30.

If you take it off the rack and carry it to the parts store you may be able to find a generic brake line with the same fittings and of a usable length.

I don't own a Nissan and haven't repaired a steering rack other than replacing mounting bushing.
I'm just going by general mechanical applications and the image you posted.

[Anonymous No.1578334]

>>1578297
thank you anon! solid and appreciate advice.

[Anonymous No.1578389]

>>1578280
Ok.

Another stupid theoretical question: can you fill air conditioner (third world mini split), without vacuum pump?
Just curious, I'm not going to do this.
I think it is possible...
>remove gas pipe from flare, connect gauge to service port, close flare with something (piece of tube soldered/crimped shut).
>open refrigerant (liquid state, very slowly, since compressor doesn't like liquid)
>turn on AC
>let some (5-10 seconds I believe) refrigerant out of liquid pipe (thirdworlders don't have EPA)
>close liquid valve, charge freon using scales
>close gas valve, turn off AC
>disconnect freon cylinder from gauge
>connect all lines
>open liquid line valve slightly, so freon purges air out
>disconnect gauges
>open all valves all the way.

[Anonymous No.1578395]

I've got an old stereo receiver that lights up but no sound comes out of. It doesn't "click" when I turn it on but I'm pretty clueless on what the issue could be.
It's a Technics SA-450 and there is basically no information about it online.

[Anonymous No.1578396]

>>1578389
I will make a gif, since I guess, not everybody will understand my ESL engarish.

[Anonymous No.1578415]

>>1578389
The problem isn’t just the air; it is the moisture in the air. It causes the refrigerant to break down into HF which eats through everything. The vacuum guarantees you’ll have a moisture free system.

[Anonymous No.1578417]

>>1578389
>can you fill air conditioner without vacuum pump?
I personally never do it - I have to maintain the systems I work on.
A friend who has an HVAC / Electrical business with ~30 employees told me he did this lots of times on installations.
The condenser is filled from the factory.
He installed the lines and depressed the schrader on the low side.
Opened the high side valve on the condenser and listened to the sound emitted from the open port on the low side.
He claimed he just waited until the sound changed when the discharge switched from air to 'freon' that had passed through the evaporator and line back to the low side port..
Release the schrader so it closed and open the low side valve on the condenser.
Turn the unit on and adjust the charge.

[Anonymous No.1578424]

>>1577825
that is pretty cool. but like - don't you have auto insurance? they normally have a policy where they will jump your car for free.

[Anonymous No.1578428]

>>1578415
I though that only oil breaks down and becomes acidic. Refrigerants, AFAIK, are pretty inert.
>>1578417
That is common practice in third world shitholes.
I have installed myself a mini-split like that, and now I think how badly did I fuck up, and how I should unfuck it, in case it breaks down (but I guess I'd get vacuum pump for this case)...
>He claimed he just waited until the sound changed when the discharge switched from air to 'freon' that had passed through the evaporator and line back to the low side port..
Except I was waiting for schrader to cool down slightly, and I never adjusted charge, since I don't have gauges.

[Bepperoni No.1578444]

>>1578424
Do you have an hour and a half to wait for the AAA guy?

Anyway I bought it for the girl. I have jumper cables in my car so I just have to find another human bean with a car. But chicks will get all frantic and call me crying and even if she has jumper cables, I will probably need to drive there anyway. So I’m going to teach her how to use this thing instead.

Also got new headlight assemblies coming so she can see better at night. I gotta get one of those jumper packs for my mom too, but I think my mom would call me for help anyway even if she had the jumper pack in her car.

>>1578395
Relay? Once again I must preface this by saying I’m a retard, but the receiver I just took apart had a couple relays on the power supply board and I imagine that’s what the click is so you can try to power that up and see if it works.

[Anonymous No.1578485]

>>1578444
Is the big heavy boy the relay? I'm pretty retarded when it comes to audio equipment. Also supposing that it is would I have to replace it or is there a way to fix it?

[Anonymous No.1578541]

Can I sand a table that's already been finished? Boiled linseed oil, dried and cured.

It seemed perfectly smooth when I was applying the coats, but a week and a half later and there's a little rough patch. Can I just get some high-grit sandpaper and get it smooth, or will that not work because of the oil?

this is my first time building real furniture, I've only ever built stupid shit out of 2x4s before

[Anonymous No.1578546]

Will epoxy resin cure in ~50F temps?
I can't continue my project without it and I'd prefer not to bring it inside or wait a few weeks for warmer weather

[Anonymous No.1578547]

>>1578546
heavily depends on the epoxy
I used gorilla glue brand epoxy resin in a project and kept it in my 30-40 degree garage and it was fine, but its service temperature is -10° to 180° F according to their website

[Anonymous No.1578615]

>>1578395
>SA-450
>>1578395
search for sa-450 sa-550 sa-350

https://www.youtube.com/watch?v=De3SmmzE8rs

https://www.ebay.com/itm/Technics-SA-450-Receiver-Service-Manual-Original/232825534507?hash=item36357bb82b:g:SHwAAOSwgvFbNbYZ

http://www.audiokarma.org/forums/index.php?threads/technics-sa-450.92291/

http://www.fixya.com/support/t19313984-just_bought_technics_sa_550_stereo

http://www.audiokarma.org/forums/index.php?threads/technics-sa-550-strange-fault.533159/

Check for internal fuses.

[Anonymous No.1578621]

what are the essential tools (and minimum price points) to not get laughed out of /ohm/? I imagine my new complimentary harbor freight multimeter won’t make the cut and i’m not sure what sort of soldering iron i should be on the lookout for

[Bepperoni No.1578682]

>>1578485
The big heavy boy is probably the transformer.

On the right side of this pic is the power board of the one I ripped apart. That one has two relays, the latger rectangle things that look like the Muzzie box. One is black and one is clear on mine. Also there’s a couple glass fuses so check those like anon said.

>>1578621
There’s a bunch of decent Amazon meters for like $30-$40, but a real /ohm/er only uses bench equipment and a Hakko soldering iron.

[Anonymous No.1578712]

>>1578682
what do i even look for in a multi and a soldering iron for /ohm/ approval?

[Anonymous No.1578770]

>>1578712

DMM: should be able to read down to micro-amps on DC, and millivolts on AC. a frequency reading, and capacitance meter are desirable extras but not necessary.

Iron: a replaceable tip made from steel-over-copper, not just copper. getting something like a Weller WP25D or WP35D will mean any mistakes you make are your own, and not caused by the iron.

[Anonymous No.1578812]

>>1577698
Khan academy might have the answer for some of the physics related problems. Reading and using an oscope is probably something you should poke around youtube for.

[Anonymous No.1578904]

does a thing like this exist but actually as an installed device inside a receptacle box?

[Anonymous No.1578913]

Took this giant brass gear out of an old screen printer.
It weighs about 15Kg and is shiny and sexy.
Recommendations for what to do with it?

[Anonymous No.1578962]

so I've got a (16'x20') tarp that I want to put over this canopy as in the pic. I've done it this way before but the tarp wound up ripping eventually at the grommets (after a couple years). I got a better quality tarp this time (12mil thick versus probably 6 or 8).

I'm wondering if I were to sandwich the tarp between 2 boards (1-by's for instance) then anchor them by tying the boards via rope to the ground (as was previously done with the grommets) would it be more sturdy? I'd do this at the top of the tarp as well as the bottom.

[Anonymous No.1578987]

What is a good chainsaw? I need to step up my chainsaw game and it's really hard to find good and/or trustworthy reviews. I'd just go for the biggest Stihl that fits my budget but the few tests that exist suggest the top of the line EA7900 Makita (identical to Dolmar with a different paintjob) are reviewed much better than all the other rivals.
The comparable Stihl would cost me almost twice as much and then there's Husqvarna which I don't even know how to rank or where to get.
I'm looking for a saw with at least a 45-50 cm (18-20") bar and as much power as is reasonable for this size. The trees that need felling and cutting are mostly maple and heavy beech with a few pines inbetween so I really do need a bit of oomph.
Budget was 800€ but I don't mind spending a bite more or less. I'm struggling to see how the Stihl could be worth twice the money though (~1500 € for the MS 462).

[Anonymous No.1579030]

Is it worth making my own juice press with wood and a bottle jack for $40 when nice metal versions are available for $75? None of the DIY juice presses I'm seeing on youtube look great and actually look quite cumbersome

[Anonymous No.1579031]

>>1573246
This is too stupid of a question to ask at /ohm/.
I have this MOSFET driver circuit, but my MOSFETs keep conducting even when I make the inputs zero. Is there anything wrong with what I'm doing?

[Anonymous No.1579078]

>>1578770
thanks anon, how is this DMM?: https://www.harborfreight.com/7-function-digital-multimeter-63604.html

probably shit but it's free. not sure if it's even worth ordering though if it's useless for /ohm/. I see in the manual: https://manuals.harborfreight.com/manuals/63000-63999/63604.pdf it does go down to micro-amps on DC, but no millivolts on AC.

Also, for a soldering iron I found one of these locally for $10:
>https://www.amazon.com/Weller-WLC100-40-Watt-Soldering-Station/dp/B000AS28UC
not steel tipped (iron) but cheap.

[Anonymous No.1579140]

>>1579078

for the DMM, notice the DC voltage range is 0.2V to 1000V, yet the AC range only has 200V and 750V, so the resolution is only 1 volt at best. this means it's useless for audio measurements. also, it doesnt read AC current at all. conclusion: too cheap.

for the iron, a $10 soldering station is gonna last a year at most. and copper tips are very frustrating: you're gonna have to file it and re-tin it every day. conclusion: too cheap.

[Anonymous No.1579141]

>>1579078

for the DMM, notice the DC voltage range is 0.2V to 1000V, yet the AC range only has 200V and 750V, so the resolution is only 0.1 Vac at best. this means it's kinda useless for audio measurements. also, it doesnt read AC current at all. conclusion: too cheap.

for the iron, a $10 soldering station is gonna last a year at most. (my blue Weller is 20+ years old; always buy blue ones, not the orange ones). and copper tips are very frustrating: you're gonna have to file it and re-tin it every day. conclusion: too cheap.

[Anonymous No.1579168]

>>1573306
Howdy pardner
Just top off the brake fluid with water.

[Anonymous No.1579174]

>>1574157
Polish the top of the chip breaker with wet sand paper 600 grit. Sharpen wher it contacts the blade

[Anonymous No.1579175]

>>1574470
Just make a laser.

[Anonymous No.1579186]

First of, I'm total moron when it comes to electronics, so don't laught too hard.
picreleted is scheme for diy soil moisture sensor kit that I want to buy and assemble. My question is; can I replace buzzer with LED so it will light up when its dry?
Alternatively, link me something similar that dosen't need arduino, rasppi, 75 cables and hooking up to pc. Just simple board with stuff on it to stick to pot on window.

[Anonymous No.1579214]

>>1579031
make sure the OUTs are at 0v when pin 2 is low
reduce 1M to pull down any leakage
disconnect Gate from OUTs but keep Gate-Source Resistor to check for leakage in Q

[Anonymous No.1579220]

>>1579186
The choices are endless.
If you don't have DuckDuckGo in your country, perhaps another search engine is available.
Google? Bing? Yahoo??

[Anonymous No.1579229]

>>1579220
I was talking about full kits or devices. Or at least pre made PCB's with components list.

[Anonymous No.1579242]

>>1579229
>I was talking about full kits or devices. Or at least pre made PCB's with components list.
The answer is the same.

[Anonymous No.1579245]

>>1579229
>I was talking about full kits or devices.
$4.23 delivered

[Anonymous No.1579261]

>>1579242
>>1579245
I have one like this. Huge shit suitable maybe for garden or container in the size of a large bucket not your ordinary plants pots on window.
We're missing a point there guys. I was asking about replacing buzzer with LED. It is possible?

[Anonymous No.1579267]

>>1579261
>I was asking about replacing buzzer with LED. It is possible?
No

[Anonymous No.1579269]

>>1579261
>Huge shit suitable maybe for garden or container in the size of a large bucket not your ordinary plants pots on window.
You must have tiny hands too.

[Anonymous No.1579279]

>>1579141
Thanks. I read some 'what soldering iron should I buy' threads from various sites, and one of the downsides of the WP25D seems to be that thermometer / tempature controlled soldering irons tend to be way more accurate, I might just go with a digital, like the Hakko FX888D or this: https://www.amazon.com/X-Tronic-3020-XTS-Digital-Display-Soldering/dp/B01DGZFSNE, or this https://www.aliexpress.com/item/Electric-Unit-Digital-Soldering-Iron-Station-Temperature-Controller-Kits-for-HAKKO-T12-Handle-DIY-kits-w/32740527077.html?shortkey=F3EbuqUz&addresstype=600

[Anonymous No.1579337]

>>1573246
>old lead acid car battery
>doing routine maintenance on car
>battery dies cause left lights on
>car top up battery with distilled water so just water level just touches the lip
>charge battery over night
>check water levels and way way too high
>suck out some water
>battery now very weak and not charged well by alternator
i think i sucked out too much acid. i didnt know i shouldnt remove water from the battery (only add). should i buy a new battery or can i fix this one.

[vent anon No.1579346]

the fan in this vent no longer spins. the power outlet still works but nothing happens when i plug in the fan power cord pictured. how do i begin to fix this? am i in the right place to ask?

[vent anon No.1579348]

>>1579346
pictured again because i'm stupid.

[Anonymous No.1579352]

>>1579348
Can you manually rotate the blades?
ie: is the bearing fucked or is the motor fucked

[vent anon No.1579357]

>>1579352
the blades spin smoothly

[vent anon No.1579377]

>>1579352
how do i figure out where and what motor to buy?

[Anonymous No.1579401]

I was thinking of using some pic related to accent my bike.

Never done this before, general thought process is:

Sand down the bits that I want to do.
Add a bright white layer.
Add the Glow paint.
Use some form of Lacquer to protect it.

Does this all sound about right? If so can anyone recommend good base whites and lacquers for the task?

Thanks

[Anonymous No.1579432]

>>1579401

if you wish to advertise your homosexuality, just get a sports cup.

[Anonymous No.1579435]

>>1579377
>how do i figure out where and what motor to buy?

if the blades spin freely then the motor is bad. it's very very likely that a thermal fuse sitting on the coil of the motor blew. these can be replaced, or better yet, bypassed. google for how-to.

as for buying a new motor, it's not gonna happen. you might be able to get a replacement motor assembly if the thing has a brand name, and is recent. but more than likely, you'll have to replace the whole vent.

[Anonymous No.1579436]

>>1579435
thank you. what type of person do i call from the yellow pages?

[Anonymous No.1579449]

>>1579279
>tempature controlled soldering irons tend to be way more accurate

this is a meme, i've used both for decades and they are virtually indistinguishable. for those without thermostats, you might have to wait a couple of seconds more to get them hot enough after a heavy joint, but it's such an uncommon and trivial matter.

[Anonymous No.1579452]

>>1579436

google "Broan 688-K" for replacement parts, or ''electrician + my home town" for replacing the unit.

[Anonymous No.1579455]

>>1579435
>>1579452
thank you so much /diy/

[Anonymous No.1579457]

>>1579455

Broan 688-K motor assembly.
https://parts.broan-nutone.com/ModelDetail.aspx?modelnumber=BROAN%20688-K

[vent anon No.1579465]

>>1579457
better than i hoped for. thanks again. i'll post an update after trying to repair it myself!

[Anonymous No.1579476]

>>1579377
Just buy a new package of the same brand and model.
The fan mounting plate snaps into place in the shell.
Pop the fan plate out and snap the new one in.
Plug the fan in and you're good to go.
Leave the shell in place coz it's a bitch to replace and it isn't 'worn out'
Use the new plastic cover if you want a fresh look on the ceiling.

[Anonymous No.1579480]

>>1579465

[vent anon No.1579484]

>>1579480
i'm hoping to just take the face plate and motor out. replace them. i would probably damage the ceiling if i replace the unit. i may end up just calling an electrician when the package arrives, i dont care about money i just need it to work.
thank you for the alternates.

[Anonymous No.1579489]

>>1579484
>i'm hoping to just take the face plate and motor out. replace them.
You're ordering a motor with fan and plate for >$50
You can buy the whole unit at a local hardware store for <$30
Take the motor with fan and plate out of the package and throw the rest away.

[Anonymous No.1579519]

>>1579489

from Broan web site:

"Some Broan-NuTone model numbers include an alpha suffix. (Examples: 688-K, 41000-L, 679FL-C.) If your model includes an alpha suffix, it is important to select the parts related to the complete model number - including the alpha suffix."

[Anonymous No.1579654]

Should I pay $20 for a used 26"x18"x1.5" slab of carrera marble off craigslist that perfectly fits my side kitchen cart? I got them down from $35

[Anonymous No.1579761]

hi, i have a motor that run at 5kg.cm fixed on the small pulley ( 1cm radius ), am I correct to think that I will have 5kg of lifting on the external ring of the big pulley ? ( which is 4cm radius )

[Milwaukee No.1579778]

>>1579761

pretty sure youll have 4 times more torque at 4 times lower speed, so 20kg/cm.

someone will correct me if im wrong

the bigger the driven pulley in relation to its drive pulley, the higher the torque.

[Milwaukee No.1579782]

>>1577927

one gallon and stored for the winter is probably what the deal is. condensation happened and now your fuel is not only old and its octane deteriorated, but full of water now too.

dont go fucking around with your spark plug leads as handling them after theyve gotten old and brittle can break them apart inside and then youre fucked. the problem is your old bad gas.

this is assuming a: cranks good - no start scenario but you never really specified

[Anonymous No.1579800]

>>1579432
Wait... protecting your reproductive organs is gay?

[Anonymous No.1580318]

The fuck is the difference between sandpaper and a sanding sponge?

[Anonymous No.1580330]

>>1580318
>The fuck is the difference

the difference is entirely obvious. no need to ask or answer.

[Anonymous No.1580332]

>>1580330
>one's paper, one's sponge
Thanks, Larry.
Anyone else's wife particularly snippy today?

[Anonymous No.1580478]

Is a guitar pedal a good first electronics project? Ultimately I want to make some synth modules but I've never gotten to use a pedal before and I want to make some Boards of Canada esque sounds so I'm thinking I'll clone an Alesis Quadverb.

Whats the relation between synth modules and pedals?