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/diy/ - Do-It-Yourself

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1115252 No.1115252 [Reply] [Original] [archived.moe]

do i have time or should i just drop the whole thing

2 replies omitted. Click Reply to view.
>> No.1115294

>>1115252
FEA
done in 2 seconds.

>> No.1115297

>>1115252
I would say it is c)

>> No.1115357

Truss bridges are simple as fuck. I literally made mine the night before strength testing and it was somehow three times as strong as the next strongest design in the class. Of course, I learned nothing from the experience and my continued misplaced laziness and smugness meant that I dropped out not long afterwards.

TLDR do your fucking projects and study properly you lazy shit

>> No.1115358

After looking at the sticky, I'm surprised this isn't a thing: "No homework threads". Although, this thread is already covered in the hints and, as another anon pointed out, there's insufficient data. The only recommendation I can give is to shove the pieces up your butt.

>> No.1115371

>>1115255
im planning on going with the warren design as it looks easiest. im going to have to design the whole thing on google sketchup and write a paper with the calculations for the estimated forces (i hope to carry about 20 kg = 44 pounds at the center of the bridge), then i have to build the actual thing with sticks of balsa wood and woodglue



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1115245 No.1115245 [Reply] [Original] [archived.moe]

Hey /diy/, i know it's going to look like the shilliest post you've ever seen, but i'm not advertising anything, i just wanted to share this cool DIY website wich has a lot of great ideas for decor, crafts, etc. and a nice little community toi. You should check it out, especially if you're looking for a good decoration Idea.



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1115233 No.1115233 [Reply] [Original] [archived.moe]

Hey so this mechanisem is suoppse to close the door but it doesnt work anymore how do i fix it????

>> No.1115238 [DELETED] 

Unless it quit working because you changed the position of the arm, you can't 'fix' it.
It's a sealed unit with springs and fluids.
When it dies it's time to replace it.

>> No.1115242

Didnt change it... are you sure it cant be fixed???

>> No.1115247

If you didn't make any adjustments there is nothing to fix.
It's a hydraulic cylinder with a return spring.
The working 'fluid' is usually air.
The piston is moved against the spring when opening the door.
The spring pushes the piston back closing the door.
There are ports and valves controlling the air flow within the cylinder.
It may have a stripped gear or broken spring but where do you buy parts?



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1115211 No.1115211 [DELETED]  [Reply] [Original] [archived.moe]

https://www.youtube.com/watch?v=H1dnO4h8Mms



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1115141 No.1115141 [Reply] [Original] [archived.moe]

Hello DIY,

First time poster here. I recently inherited a used Karcher Pressure Cleaner. I have the basic attachments and the cleaner is all in good working order.

I've seen Karcher supply both generic "cleaner" and "car shampoo" branded under their names.

It's probably a long shot, but why can't you run a non-branded cleaner chemical in your pressure cleaner over what the manufacturer sells?

>> No.1115164

>>1115141
Read any thermo/fluids book.
Chemicals that are physically similar can have completely different properties especially when used in a specific system.
That being said nothing disastrous would probably happen, reduced velocity from being too viscous from the nozzle. It could also corrode parts that weren't meant to take certain chemicals. The engineers who made the thing are probably smarter than you.
tl;dr saving a few dollars and ruining your hundred dollar machine is not worth.

>> No.1115178

>>1115164
Yeah, I was thinking of perhaps trying this on a junk pressure cleaner first to measure the life span.

Probably not worth as you've said.

>> No.1115189

>>1115141
Who says you can't?

I have a K2.xx series Kaercher. Its the regular household one that breaks all tge time and is impossible to find spares for.
Both the low and high pressure detergent systems are downstream of the pump and work using a Venturi principle.

The high pressure one is just a short extension/lance/wand with a bottle underneath.
It attaches to the gun and you can control the mixture of detergent/water and the fan spread.

The low pressure one is a clear tube on the pressure washer that sucks up soap from any soap bottle.
You have to remove the extention/lance/wand to use it.

>> No.1115194
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1115194

>>1115189

My chemicals have to go into a tank that integrates into the whole pressure cleaner, I imagine it injects straight into the pumping system. Not as an attachment.

However, as you've said I could put an external tank where water and said chemical can be mixed outside of the pump.

Just for clarity and so other Anon's know my model is the k2 180. in pic related.

>> No.1115338

>>1115194
I'm not sure how the ones with a tank work. I know the Industrial HDS models have tanks. But I've never seen one.

All the ones I've seen have a clear plastic tube as an inlet and no tank inside the washer itself.

Even with a tank, detergent might still be injected downstream of the pump though, for reasons of simplicity.

This is because detergents are sometimes oily, like radiator coolant.
Oil doesn't compress like water does, and it may put too much stresses on the pump.
Regular detergent will also gum up internals of the pump unless you run clear water afterwards.

Designing a detergent that; cleans well, compresses like water, and leaves no harmful residue costs a lot of money.

Not likely from a company that basically makes disposable pressure washers.

If it were me, I'd use a non Kaercher detergent without worry.



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1115132 No.1115132 [Reply] [Original] [archived.moe]

So I've just moved in to a place without any type of curtain. In the morning the sunshine comes straight to my room without any kind of filter.

I was thinking of the cheapest way to put some curtains there, nothing too fancy. Are hook and loop fasteners the best idea?

11 replies omitted. Click Reply to view.
>> No.1115571

>>1115132
Thumb tack sheet over window. Done.

>> No.1115574

>>1115174
>If you are renting, the landlord legally has to provide them.

No matter how highly you value yourself, your local codes don't necessarily apply to the rest of the world.

>> No.1115578

>>1115574
Hey buddy, this might be a message board about Cambodian basket weaving but it's still an AMERICAN Cambodian basket weaving message board.

>> No.1115583

>>1115578

I live in America
I rent property to families.
I put up mini-blinds in all of my properties
There is no code telling me I have to provide curtains.

>> No.1115584

>>1115174
And in Indiana, the landlord is under no legal obligation to provide them. They local ones require them, but they make you provide them.



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1115120 No.1115120 [Reply] [Original] [archived.moe]

last >>1102621

pastebin.com/9UgLjyND

>I'm new to electronics, where do I get started?
There are several good books and YouTube channels that are commonly recommended for beginners and those wanting to learn more, many with advanced techniques. The best way to get involved in electronics is just to make stuff. Don't be afraid to get your hands dirty.

>What books are there?

Beginner:
Getting Started in Electronics Forrest Mims III
Make: Electronics Charles Platt
How to Diagnose and Fix Everything Electronic Michael Jay Greier

Intermediate:
All New Electronics Self-Teaching Guide: Kybett, Boysen
Practical Electronics for Inventors: Paul Scherz and Simon Monk

Advanced:
The Art of Electronics by Paul Horowitz

>What YouTube channels are there?
https://www.youtube.com/user/mjlorton
https://www.youtube.com/user/paceworldwide
https://www.youtube.com/user/eevblog
https://www.youtube.com/user/EcProjects
https://www.youtube.com/user/greatscottlab
https://www.youtube.com/user/mikeselectricstuff
https://www.youtube.com/user/AfroTechMods
https://www.youtube.com/user/Photonvids
https://www.youtube.com/user/sdgelectronics
https://www.youtube.com/user/TheSignalPathBlog

>What websites feature electronics projects or ideas?
http://adafruit.com
http://instructables.com/tag/type-id/category-technology/
http://makezine.com/category/electronics/

>Where do I get components and lab equipment from?
digikey.com
jameco.com
sparkfun.com
ramseyelectronics.com
allelectronics.com
futurlec.com
ladyada.net/library/procure/hobbyist.html
mouser.com
alliedelec.com
newark.com
ebay.com

>What circuit sim software do you use?
This mostly comes down to personal preference. These are the most common ones though:
NI Multisim
LTSpice
CircuitLab
iCircuit for Macs

>What software should I use to layout boards?
Circuit Wizard
ExpressPCB
EAGLE
KiCad

22 replies omitted. Click Reply to view.
>> No.1115530
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1115530

>>1115406
Top: Dremel VersaTip
Middle: Goot KS-30R
Bottom: Soldron 25W

I use the middle one. The "genuine made in japan weeb iron"

>> No.1115540

>>1115521
If the power supply is a constant current supply then it will need to output double the current required by one led to power two. If its set to output double the current and you disconnect one led the other led will get double the current and will be sad
If one of the leds breaks then it has essential taken itself out of the circuit and so the other led will still be sad. You see that running parallel led on a constant current supply can be tricky.

A constant current supply is only constant current because it varies it's own voltage to keep the current where it needs to be. You can put as many leds as you want in series as long as the total voltage doesn't exceed the maximum voltage the driver can produce.
You can put chains in parallel but then if any single led breaks then that leg of the series circuit will probably go open circuit and the entire current will pass through half of the leds and they will be sad again. Thevenin did a pretty good job of explaining voltage and currents in series and parallel so google him of you want to learn.

>> No.1115542

>>1115521
There are variations between individual LEDs and LED assemblies.
If you attempt to connect them in series or parallel they may not operate as designed.
When LEDs used in home wiring most electricians call the power supply a 'ballast'
This is because fluorescent fixtures use a ballast for the same purpose - to limit current.
(the ballast has other functions but let's not get sidetracked)
The 'power supply' for a 120vac LED string usually looks like a 'brick' with wires - just like a ballast.
Some companies even describe them as ballasts.
More specifically they are called LED Drivers so they aren't confused with 'power supplies'
Each LED Driver is designed for specific wattage and number of LEDs it supports.
To operate your LEDs properly, you should give each one it's own driver of the proper rating or find a driver than can operate single or multiple LEDs of the same wattage simultaneously.

>> No.1115544
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1115544

>>1115542
>Some companies even describe them as ballasts.
http://www.prweb.com/releases/2011/02/prweb5100754.htm

>> No.1115562

>>1115540
Cheers, that helps a lot.
Imma look up Thevenin
>>1115542
Shit, I've been using LED driver and power supply interchangeably, I guess I need to get it in my head that they're completely different things then.
>Each LED Driver is designed for specific wattage and number of LEDs it supports.
Gotcha, this clarifies everything perfectly.
No mixing and matching (kinda) get the driver(s) that match what you're doing perfectly.



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1115119 No.1115119 [DELETED]  [Reply] [Original] [archived.moe]

last >>1102621

pastebin.com/9UgLjyND

>I'm new to electronics, where do I get started?
There are several good books and YouTube channels that are commonly recommended for beginners and those wanting to learn more, many with advanced techniques. The best way to get involved in electronics is just to make stuff. Don't be afraid to get your hands dirty.

>What books are there?

Beginner:
Getting Started in Electronics Forrest Mims III
Make: Electronics Charles Platt
How to Diagnose and Fix Everything Electronic Michael Jay Greier

Intermediate:
All New Electronics Self-Teaching Guide: Kybett, Boysen
Practical Electronics for Inventors: Paul Scherz and Simon Monk

Advanced:
The Art of Electronics by Paul Horowitz

>What YouTube channels are there?
https://www.youtube.com/user/mjlorton
https://www.youtube.com/user/paceworldwide
https://www.youtube.com/user/eevblog
https://www.youtube.com/user/EcProjects
https://www.youtube.com/user/greatscottlab
https://www.youtube.com/user/mikeselectricstuff
https://www.youtube.com/user/AfroTechMods
https://www.youtube.com/user/Photonvids
https://www.youtube.com/user/sdgelectronics
https://www.youtube.com/user/TheSignalPathBlog

>What websites feature electronics projects or ideas?
http://adafruit.com
http://instructables.com/tag/type-id/category-technology/
http://makezine.com/category/electronics/

>Where do I get components and lab equipment from?
digikey.com
jameco.com
sparkfun.com
ramseyelectronics.com
allelectronics.com
futurlec.com
ladyada.net/library/procure/hobbyist.html
mouser.com
alliedelec.com
newark.com
ebay.com

>What circuit sim software do you use?
This mostly comes down to personal preference. These are the most common ones though:
NI Multisim
LTSpice
CircuitLab
iCircuit for Macs

>What software should I use to layout boards?
Circuit Wizard
ExpressPCB
EAGLE
KiCad



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1115106 No.1115106 [Reply] [Original] [archived.moe]

I nee to know a homemade way to build a catapult to help me crusader some heretics

>> No.1115107
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1115107

>>1115106
Silly bitch



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1115096 No.1115096 [Reply] [Original] [archived.moe]

So I got this Zippo when my grandfather died. I don't smoke but I love the shit out of it. I'm not sure if it's normal but after about a week the fluid reservoir evaporates entirely whether I've been using it or not.

Either way, is there a gasket or something that wouldn't damage the lighter but would make the opening airtight or close to it?

Thanks for reading.

3 replies omitted. Click Reply to view.
>> No.1115213

>>1115096
You fill your zippo daily after winding your watch and putting away your strup and straight razor. Like a grown man does... in the last turn of the century.

Now? Just keep your batteries charged.

>> No.1115306

>>1115213
>Not honoring old traditions
Git gud

>> No.1115347

>>1115306
Is that why you are circumcised?

>honoring old traditions
If it has outlived its usefulness it has outlived being honored.

>> No.1115349

>>1115347
>uncut fag projects insecurities
more news at 9

>> No.1115418

>>1115349
>cut fag protects insecuritys



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1115040 No.1115040 [Reply] [Original] [archived.moe]

Putting in wood mulch/chips and rocks. Any other fags out there do anything similar, my only issue is that niggers walking up my street decide my lawn is a trashcan, dumping thier various debris, but i cant flim flam the zim zam here, i digress.

4 replies omitted. Click Reply to view.
>> No.1115439

>>1115040
Looks like shit and stinks in humid weather.

>> No.1115450

>>1115110
I was doing some hvac work in a lawyers office once. one of the cases on the desk was someone was suing a homeowner because their sprinkler made the sidewalk unusable and they sprained their ankle stepping onto the street to avoid getting sprayed.

>> No.1115599

>>1115040
Put a metal decrative tashcan out .


Dont expect niggers to use it. They view the world like they live their life, and trash everything around them.

>> No.1115632

Its funny how uneducated white trash always blame niggers but not the Jews, whom made them their modern day slaves. Trump even know this and made his daughter marry a Jew and convert to Judaism. The Kabbalah isn't like the bible you stupid white trash.

>> No.1115689

>>1115439
>cali
>humid
my friend



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1115026 No.1115026 [Reply] [Original] [archived.moe]

I'm planning on making what I call a "make shift computer". Essentially I want a mechanical computer that isn't like the kind I'm using right now to type this message on, but, instead, can be able to run a word pad of sort without being electromagnetic.

I don't actually care too much about the mechanical parts themselves, but, instead, I care about the "logic gates" and how they make certain processes work.

So I already know how to storage memory into binary through the use of the SR latch. I know how to add and subtract with an ALU as well. The problem is that I don't understand the functionality of other things in the computer and how they are set up through pure logic gates.

When I look up a guide on the internet, it doesn't actually explain it or it uses logic gate clusters instead of explaining what specific logic gates are needed to make it function this way. Please halp.

20 replies omitted. Click Reply to view.
>> No.1115188

>>1115026
A processor is a very complex design, requiring many abstraction layers to fully grasp its inner workings. The reason that components in a layer are specified using subcomponents of the previous layer, and not using transistors or gates, is because the specific implementations of those devices is dependent on the actual hardware. For example, in CMOS logic, NAND and NOR gates are the most basic type of gate, and ALUs are built with this in mind. If, in your specific system, OR and NOT gates are the easiest to make, you'll probably try to build things around that.
With that said, I still don't know what are you trying to build. A binary mechanical processor, like a Z1? Or an analog computer? Maybe a denary computer, like the analytical engine? Are you designing the CPU from scratch, or using a known design, like MIPS? What type of logic are you using. latch-lever logic, rod logic, other I'm not aware of?

>> No.1115201

>>1115095
yeah, ok, good luck, not gonna happen.
Remember those old computers, that ran off paper cards, and used tubes? A whole building full of that shit was basically the power of modern scientific calculator.
If you want something, so complex as a notepad program you just gonna fail.
Maybe you just didn't vocalise what you really have in mind.
The most realistic thing you can do is various mechanical calculators, integrators and shit. But not a goddamn computer.

>> No.1115383
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1115383

>>1115129
>I'm just going to watch some lectures so I don't have to deal with autism

Unfortunately, there's no known cure, so you're going to be stuck with it for the rest of your life.

And I take my original view back: You're not just ignorant, you're stupid. Worse, willfully so.

>> No.1115537
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1115537

>>1115097
Are you the same guy who was trying to build Batman arm braces last week?

>> No.1115557

>>1115129
>like I said, you are just trolling. Also I'm just going to watch some lectures so I don't have to deal with autism.

sounds like you didn't understand a word he said

you're not going to do anything



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1115025 No.1115025 [Reply] [Original] [archived.moe]

Can anyone tell me if there are any cheap alternatives to a rotary tool? I'm trying to cut a hose clamp in half longways and I'm not in possession of such a tool? is there any other simple tool or item I could use as a substitute?

1 replies omitted. Click Reply to view.
>> No.1115031

hacksaw blade
tape for handle

>> No.1115055

>>1115025
http://www.homedepot.com/p/WEN-Rotary-Tool-Kit-with-Flex-Shaft-2305/203604481

>> No.1115080

>>1115025
Harbor freight

>> No.1115082

>>1115025
Just buy a used one off CL. I'd seen ones in my area in decent shape selling for under $10. No accessories, though, just the bare too.

>> No.1115083
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1115083

>>1115025
>cheap alternatives to a rotary tool?
it's called, a grinder



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1114990 No.1114990 [Reply] [Original] [archived.moe]

What's a grayish, powdery, nontoxic substance I can use to mimic common dust? Something that can be applied quickly.

Need this for use in a film. Everyone recommends baby powder, but it shows up as too white, even on camera.

22 replies omitted. Click Reply to view.
>> No.1115237

>>1115191
>>1115197
You joke, but I promise it'd sell. Realism doesn't matter. It's not about what's real, it's about what feels and looks good at a glance. Almost nothing you see in a film is real, and there's damn good reason for it. Here's why people recommending actual dust are mongoloids:
>Dust contains hairs, debris, bits of web, and clumps that are too too small and numerous to be controlled or altered in a timely manner for closeups. If it can't be controlled fast and practically, to minute detail, then it's not appropriate. Maybe if you were just throwing that shit on the floor, it'd be fine, but we're not.
>Can't realistically get enough of it. You have to assume things will go wrong. Shit will get spilled, things will be done incorrectly and have to be done over, etc. Murphy's law. If I can't have buckets of spares sitting by on set, then it's not appropriate.
>Actors are whiny pussies and will pout about their sinuses or some shit if they suspect that the dust is real. This wastes valuable time.
>Literally collecting dust would be cheaper, but so time consuming that it simply isn't worth it, even if it was perfectly consistent and controlled. A small production doesn't have enough people on board to have a guy spend three afternoons vacuuming up attics. That's fucking ridiculous.

>> No.1115248

fullers earth. standard film fx material.

>> No.1115323

>>1115248
Fuller's earth is good, baby powder and graphite mixed will work as well.

>> No.1115731

>>1114990
Cocaine.

You're making a movie, so plenty of this should already be on hand.

>> No.1115736

>>1115237

Well if your team actually hoovered up your own houses you would easily have a good amount with 0 extra work.

Or did mom just change the hoover bag?



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1114954 No.1114954 [Reply] [Original] [archived.moe]

Why wont this outlet work

25 replies omitted. Click Reply to view.
>> No.1115539

>>1114957
Fuck Its A Toyota

>> No.1115563

>>1115382
gas doesnt need oxygen if you heat it high enough

>> No.1115567

>>1115249
I'll need you to show me yourself, sunshine.

>> No.1115624

>>1115567
already tested it unplugging a block heater in the winter

>> No.1115633

>>1115199
Not sure if bait or not, but I guess your retarded none the leaa



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1114949 No.1114949 [Reply] [Original] [archived.moe]

So I made this ring, and it's a bit crooked from the side. I've never made anything else with silver before, and I'm having a bit of trouble trying to straighten it out. Anyone here have suggestions?

2 replies omitted. Click Reply to view.
>> No.1114991

>>1114970
You could always heat it up and put it in a press then hammer it back down to size.
for a diy press you could just use a car jack

>> No.1115196

>>1114991
I'll give it a try.

>> No.1115265

>>1114949
sandwich it between 2 blocks of flat steel and hit with a hammer

>> No.1115597
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1115597

>>1114949
is that lost wax casting? i'm a noob with lots of junk silver, i have never smelted before but want to craft some small silver stuff then work up to making something out of my scrap gold

>> No.1115690

>>1115597
>that shitty finish
>lost wax
Lost wax is supposed to be near net process.
I'd say your biggest worry is getting the junk silver +1000 C and degassing it.



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1114944 No.1114944 [Reply] [Original] [archived.moe]

Hey /diy/,

I've had this traffic light with 12" lenses for some time now. It has a bracket for hanging, but I'd rather put it on a stand. Problem is, these stands cost in the ballpark of $200.

Is there some kind of fitting I can use to secure the light on top of a length of pipe? The hole at the bottom (I assume it's standard) has a diameter of 2", and is not threaded.

1 replies omitted. Click Reply to view.
>> No.1114971

are you asking for a clamp or what, I don't understand

>> No.1115117

>>1114971
I'm not certain what hardware to use. Something that can secure the light to the top of a post.

>> No.1115128
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1115128

the simpler solution is to attach to the back of the lights using clamps, coz you have lots of surface area to work with. attaching something to the top of a pole is way more difficult unless you have a flange that fits the top of pole and has screw holes.

>> No.1115133

>>1114944
You should ask your local government's road service department.

>> No.1115385
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1115385

>>1114944
Make stand out of threaded iron pipe and fittings.



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1114925 No.1114925 [Reply] [Original] [archived.moe]

Here goes.
I've been without a steady job for the last three years.

Trough the EU Employment Agency I found a job in Germany.

I will be a boat mechanic looking after a fleet of 30 diesel engined boats. It starts in two months.
Wage is €4,000 NET per month and accommodation is provided so not bad at all.

Thing is, I have no experience or qualifications.
(I exaggerated a bit on my CV)
I know very little about boats or engines and I don't speak German either.

Should I try and wing it or just quit now?

21 replies omitted. Click Reply to view.
>> No.1115482

>>1115446

dude boats lmao

>> No.1115581

>>1115236
not him but as a physicist i know how engines work in theory, how do boats differ?

>> No.1115670

>>1115581

With boats corrosion and water contamination are much different things than land based motors.

>> No.1115671

>>1115670
doesnt that just mean doing electrolysis every noe and again?

>> No.1115703

>>1115671

It often means cutting and welding a replacement steel panel and installing a buffer or sacrificial anode... I'm no expert BTW so take my advice with a grain of salt



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1114909 No.1114909 [Reply] [Original] [archived.moe]

Looking for a diy cardboard valet tray. How can i do this and have it look not awful? Looking for how tos on the design

4 replies omitted. Click Reply to view.
>> No.1114933

>>1114926
Basically yes.

>> No.1114953

>>1114909
just use a bowl you mongoloid

>> No.1114960

>>1114909
What is this twattery?

>> No.1115023

what is with all this cardboard shit?

Did you get a bunch of (You)s off the first one and now you need more?

>> No.1115044

Seriously, I get the need for diy sometimes, but Jesus man, these things are like 8 bucks. Just buy one if you don't have the sense to cut, fold, and glue cardboard.



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1114893 No.1114893 [Reply] [Original] [archived.moe]

Hey I've seen some guides on how to make one of these things from Stargate, but what about function?

What can I cram in the thing to hold some serious power?

3 replies omitted. Click Reply to view.
>> No.1115414

>>1114893
leds hooked up to lithium ion battery is going to be the best your gonna get

>> No.1115429

>>1114893
Iron/Air battery

>> No.1115461

>>1114893
>What can I cram in the thing to hold some serious power?

You could cram a pocket universe and harness the entropic energy from it.

>> No.1115480

>>1115413
http://www.therpf.com/showthread.php?t=159126

>>1115461
>You could cram a pocket universe and harness the entropic energy from it.
Best I cando is supercapacitors!

>> No.1115681

incriminating photos



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