/diy/ - Do It Yourself

>>1745345
In case you guys missed it.

>Is the Y axis being set up like this a good thing?

https://www.youtube.com/watch?v=k61avDRCbv0

Looks like if he programmed that the way guy described it, he programmed z, face, face

It seems like it’s a good thing if you think along Mill machine terms and z is top of part.

>>1738416
>>1743541
I started shopping for a cnc router out of curiosity and it's overwhelming with the gazillion machines and price points, not including all the software and shit you need. I can't imagine how difficult and time consuming that would be for someone with no prior knowledge. Throwing a few hundred bucks at a guy to make you a one off custom piece to save the headache is chump change. Time is money.

>>1745533
mmmk

I have bar stock and i need to produce 20mm long pieces of it that have a 10mm through hole in it.
I center drill, then drill a 7mm hole then a 10mm hole and cut off the piece i want.

Can i use the cone left from the drill in the bar stock to do the next part or do i need to do a center drill again?
I could spare a lot of time not doing the centers. I did one part like that and it was fine, but that might have just been a lucky accident.

>>1745544
What kind of concentricity tolerance?

>>1745550
I would be happy with as large as 0.2mm
Would this error accumulate?

>>1745544
You are using a lathe, right? It depends what types of tools you are using, carbide drills are stiffer and won't drift as much as hss, but will break easier if they are off center. The further along you get into a bar the more you'll tend to drift off center, especially with hss drills. I've gotten away with it plenty of times with carbide drills, but it's not recommended. You could try it but keep an eye on concentricity, and measure both ends.

>>1744615
>ad taken down without even a response
Another reminder why I don't bother with craigslist much these days.
Don't have the willpower to try and compete with retirees who haunt the place all day for shit anymore.

>>1745557
I forgot to add, it also depends on how centered your drill is, if it's .015" off it's going to drift.

>>1745559
Yeah, it's not worth it to try and fuck with making a script to auto send them a reply the second it gets posted. Because retireds always will get there first. Ebay and bidspotter is about the only place I can fuck them over with my autosniper.

>>1745554
I wouldn't worry about doing it, personally.

Measure every 5th part and if one is fucked then switch it up.

https://www.youtube.com/watch?v=74DggoOx34c

more diy punch dies

>>1746086
oh and here's the part for the die

https://www.youtube.com/watch?v=6LSBWo2OlvE

Not strictly machining. I have to solder tiny stainless steel tubes.

Theres a "large" tube 4mmOD 2mmID, and a small tube of 0.8mmOD 0.16mmID.
Ill drill a ~0.8mm hole into the large tube and solder a small tube in it.
How can i prevent solder wicking into the 0.16mm hole of the small tube?

Micro TIG welding would be ideal to do this but i dont have access to one...

>>1746209
What is this for? Heat transfer?

>tfw can't tell if I can get important parts like power supply or drives for old Mori Seiki lathe w/ fanuc control

>>1746607
Some chemical reactor thingy.
I have no clue what it does. A coworker asked me to make it since he know i can weld (like shit) and thought it can be done with a regular TIG. Its near impossible with a regular TIG so i thought soldering would work.

>>1745557
>>1746011
Thanks for the tips.

I have a cross pin that's stuck as hell and I don't know how to get it out. one end is splined and I think I've beat on the other end so much that it deformed a little and is basically a rivet now. I thought about trying to press it out with the shop press, but I'm afraid of cracking the part or getting it misaligned and gouging the shit out of it if it slips. aside from drilling the splined end and trying to push it out the other way is there anything else I can try?

>>1746732
>hey anon come make some parts for the local meth lab

>>1746787
Ikr.
I dont know how meth is made but i dont think stuff like that is needed for it. Hope hes making some good shit tho.

>>1746610
Call dmg and ask them

>>1746732
If he needs it perfectly concentric then you're way out of your league, but I'm not understanding completely, how would you be tigging it up? Do both tubes connect to a piece or something or are the tubes just transferring liquid or gas?

>>1746777
I think you've kinda fucked yourself if you mushroomed the end. I'd try and file or grind down the splined section if it's fucked and press it out. If the part is super delicate then drill it out like you said.

>>1746847
>Call dmg and ask them

already did, they said they have machines that old still in use so they probably do offer at least service. need machine s/n to see what parts availability is like.

https://www.youtube.com/watch?v=zhkv-YjNdbw

>>1746853
https://www.youtube.com/watch?v=w78YUPRpAzw

https://www.youtube.com/watch?v=QKbmkBBp4eA

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

muh dick, I think this thing will do better at milling than my tormach

>>1746847
the splined end is about 1/2 or 2/3rds of the way pushed in with about .030 sticking out. the other end is basically flush. I thought I could push the splined end in just far enough to fix the other end, but it won't move in that direction either.

>>1746960
Sounds like a torch and press is your fren tonight

>>1746925
Drip or are you able to run from memory?

>>1747006
I don't know I don't even have the machine yet. I think it's a Fanuc 16 controller rebranded. I will probably have to drip feed it.

>>1747007
Better have them throw in the cable then.

>>1747008
I hope there isn't going to be a problem drip feeding a Fanuc 16 control...

>>1746987
which end do I heat? how can I set up the press so it won't slip?

>peck tapping

https://www.youtube.com/watch?v=Gaso2DNv3xc

>me chinee
>me haf good steel !

https://www.youtube.com/watch?v=gEwmv2qWXv8

>>1746847
I asked and it doesnt need to be concentric nor square, and insertion depth doesnt matter as long as it does not restrict flow.

The pipes would (have been welded) be soldered like pic related. 9000hours in mspaint, not to scale.
My worry is that the solder would wick inside the larger tube and block either or both of the holes.

>>1747234
dear friend, please understand

>>1747138
What about it? You've been able to do this on a HAAS for at least a decade.

>>1747347
Well it's not something I've encountered yet. I don't think Fusion 360 supports it, but I could be wrong.

>>1747347
Wait.. You actually program parts on the controller?

>>1747266

I doubt you'll have any problems just soldering it. Solder doesn't want to wick THAT badly, especially onto surfaces that haven't been cleaned/protected by flux.

Just try it. Your materials are small and cheap. No real loss if you fuck it up.

>tfw boss yells at me for leaving my endmill in the spindle
>even though I'm the only one who uses the machine
I've only been working here for 6 months and I'm already getting sick of it

>>1747266
can you fill the bigger tube with something that will block solder but can wash out later?

Reee fucker won't send me the video of the machine fast enough.

>>1747266
Oh shit, I thought he wanted a tube inside of a tube like to flow water or coolant around the outside of the inner tube. Nah, that right there should be stupid simple.

>>1747514
Just get a plane ticket and go and see it. It's worth it if you're spending over 10k

>>1747523
The parameters are of course gone because dead battery.

He allegedly has a copy of the parameters he is going to ship with the machine. Is a 4-axis 1998 Mori Seiki SL-25 with a broken subspindle (still present) worth $15k ?

>>1747652
I wouldn't pay that much for one with that much wrong with it. I would def look for another or save up and finance one from haas

>>1747824
Too late, it's my problem (adventure) now.

>>1747824
Oh and the guy sent me a .TAP file that allegedly contains the parameters. What do I do with this?

>>1747829
>>1747826
Hahaha, glhf.

>>1747897
Well i'm pretty sure it works and the subspindle isn't that big a loss imo.

>1,923 lines of

N0000 P 00000110
N0001 P 00000000
N0002 P 00000000
N0012 A1 P 00000000 A2 P 00000000 A3 P 00000000 A4 P 00000000
N0020 P 0
N0021 P 0
N0022 P 0

>>1747904
Seems legit if this thing is legit too: http://www.machinetoolhelp.com/Information/machineparameters/mori%20seiki/SL-250/SL250parameters.txt

Hey guys, I'm super new to CNC routers but I got a 3018 kit for Christmas.
Just wanted to check before I place an order: will a bit with a 3mm shank fit into a 1/8" ER11 collet? I know it's only 0.175mm out, but I'm not sure how precise these things are

>>1748190
It should be fine, I've clamped on shanks that where -.5mm and under it it held, it's not great but it works.

>>1748190
1/8 collet 1/8 is the max it will open up, it should shrink down to... let me google that for you

0.109" minimum
0.125" maximum

if 3mm is in that range it will work, but for better rigidity you want it closer to the maximum size of the collet.
https://www.mscdirect.com/product/details/93248565?fromRR=Y

>>1748190
>>1748270
>>1748297
Why not just buy a metric collet set if you can?

>>1748411
You do what you can when working in a machine shop with a mismatched set of collets, usually I'd go with the one that was snuggest without being too tight. Most collets I've worked with have a range (ex: 3-4mm)

>>1748190

You should be fine with that collet.

yesss whats better than drilling into your parallel? milling your jackscrew, which then, rotates said jack screw and raises the part on one side
the point is i learned my lesson, which is obviously to make left hand threaded jack screws out of something soft

>>1748435
lol never heard of that one

Alternatively, does anyone have an idea of what kind of performance expectations I should have on a live tool lathe?

https://www.youtube.com/watch?v=rMwts5FxVas

>boss sends me picture of lathe and message "WTF" while I'm driving home
>call him when I get back asking what the problem is
>he's mad because I left the cutoff tool in the quick change post and an empty parts catcher on the cross slide
>"I thought I talked to you about cleaning up after yourself"
>I haven't even used it since last week so he only noticed it now
>meanwhile when I come in after geting voluntold to work on my day off there's literal shit on the floor next to the bridgeport
someone please hire me. I can use mastercam and run haas and fanuc.

>>1748530
4chan is where rural people go to tell city people how stupid they are, not likely we're local.

>>1748530
How good are you at X9 and where you at

>>1748562
I think I started with x7 and then the school I was at switched to 2018 and 2019. I can do 3 axis ok but was just starting with 5 axis. I'm in the dc area.

>>1748634
>in the dc area
fuck.

welp good luck anyway

>>1748639
Not him, Chicago any better?

>>1748647
It was a shot in the dark, I'm a fucking leaf.

>>1748530
Take pictures and show him. Tell him if he's going to bitch at you then bitch at others too.

>>1748530
Sounds like a shithole with a micromanaging boss, I feel sorry for you.

Good news, guy is throwing in like 7 live tool holders and a full set (12) of the static ones.

>>1748896
>tfw 150k lathe new for 22k all in with tooling

Cnc dudes i have a question
18y fag
I live in eastern europe and plan on either going to geodesy or to a machining school to be a programer for cnc machines

Is there a future there is it hard how is it for a cnc operator

>>1748917
probably the most boring shit ever unless you find the right place or start your own, though generally in Europe every machine shop is swamped with work for some reason.

this Zala machine place apparently moved to 'Merica or something

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

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

>>1748966
alternatively, it could be a nice adrenaline rush every once in a while you have a funky setup with poor clearances and your heart is racing every time you hit cycle start because bad shit will happen if you get a collision or the part gets loose.

Half way new to machining. I've got a Bridgeport at work with an unknown accuracy DRO. I need to drill and tap four 3/4-10 holes into a 1 1/2" aluminum plate. I did this earlier this week by hand in a 1 1/4" plate. I don't mind doing it again by hand, but would it be worth the effort to try and do it on the mill besides being an excuse to use the mill? For what it's worth, we don't have mill taps, only hand taps. Through hole as well, not blind.

>>1749094
Yes, use the mill.

>>1749094
Power tap that bitch

what is the best way to thread the end of a rifle barrel if it's too short to put through the headstock? just indicate it in the 4 jaw and hope it's straight enough at the end or try to do it between centers?

>>1749134
thick wall tube with set screws in two places so you can adjust it true at two points, called a "cat's head".

don't use screws that stick out too far, you don't want anything that will grab your clothing.

>>1749116
>>1749122
I looked some videos up, and everyone seems to be recommending chamfering the hole, and also using 2 flute taps, and not hand taps. I only have the hand tap, and I don't want to wait the day for McMaster to send me a new one. Will it work with the hand tap?

>>1749148
It should.

https://www.youtube.com/watch?v=HJn9rSzAKEE

>>1749144
yah I know about those but I don't think it's stable enough to have like 2 feet of barrel sticking out one end. I saw one setup with one mounted in the steady rest but I don't know if I can build that.

>>1749134
Between centers.

>>1748896
oh and the guy is throwing in some turning tools too

I need 24 30mm radius wheels cut out of 2mm aluminium sheet. Any recommendations for a shop in Europe that could handle such an order, and a guess at what it might cost me?

>>1749630
Just curious (not from europe) what kind of edge finish and roundness do you need?

https://www.youtube.com/watch?v=g0x90V1MEmc
this is what I need. is it possible to make something that will work the same way with a standard 3 roller steady rest?

>>1749811
Edge finish? I was just thinking straight 90 degree cuts. They're wheels that will be mounted on ball bearings and ultimately on a 4mm shaft, so if by roundness you mean "can it be, say, a 96 sided polygon instead of a true circle" the answer is yes. If you mean "can it be an oval", then no. I have some basic tools, including a lathe, so I expect I could round them out on my own as long as they're mostly round to begin with, but I can't turn an oval into a circle without a ton of work so that's a no-go.

>>1749630
https://cotter.co/ maybe? I think they mostly do wood and plastic, but they do include aluminium under metals.

>>1749861
How come you can't make the wheels if you have a lathe?

>>1749864
There's an internal design sort of like spokes, and three bolt holes in addition to the hole for the bearing that need to be placed pretty precisely. I don't really have the skill or tools to do the job right, my lathe is a DIY 3D printed thing made from an old drill motor.
>>1749862
Looks good, thanks. Looks like steel is cheaper than aluminium. I might go for that instead and just use some pistol blue to rustproof it. Black wheels are a bit cooler than aluminium anyway.

>>1749873
>my lathe is a DIY 3D printed thing made from an old drill motor.

pics plz. I need a good laugh.

>>1749896
The carriage and platform are made from steel wardrobe door fittings, it's sturdier than it looks. It's obviously no good for heavy work, but 90% of what I do is smoothen things with sandpaper for which it's perfectly fine.

>>1749922

from a 3d printer perspective, that is amazing.

>>1749922
That looks surprisingly good for a 3D print. I was expecting it to just be a dremel hot glued to a 2x4.

>>1749922
that is mildly impressive actually

>>1750023
Dremel hot glued to a 2x4 would be stiffer

>>1749922
slav/10

https://www.youtube.com/watch?v=LXcYEWC9sA4

new edge precision, some troubles with hole diameter gun drilling and a cam mistake

Sweet, another micromilling job.

I have a drill operation but not enough z travel to do it on the bridgeport. I want to make a fixture that I can clamp onto the part that will guide a hand drill. what can I make it out of so that the guide holes don't get fucked up after using it a couple times? those jigs they have for making ar lowers have some kind of bushings but I don't know how I would make those or press them in with the locational tolerance I need.

>>1750812
steel, not aluminum.

https://www.mcmaster.com/drill-bushings

>>1750817
what would the tolerances be for bushings though? if the holes I make for them are +-.001 will it still be that close when I press them in?

>>1750836
That I don't know, but a drilled hole probably won't be that accurate anyway.

>>1750836
>+/- 0.001 with a drill
That'll be very hard to do on a bridgeport, you're gonna need to ream if you want a reliable size and shape like that.

>>1750853
the size is not that important, only center to center distance and being perpendicular to the surface.

>>1750859
Ahhh.

Tip the head over, then.

>>1750860
I don't think I can raise the knee high enough if I do it that way

>>1750989
spacer on the table to lift the part up?

Every damn job I do requires some amount of 3d surfacing. I'm convinced I take jobs specifically because I can do 3d surfacing better or easier than most shops.

Fanuc must really be fucking some shops over.

Hey guys, is there a large manufacturer producing something like the Pocketnc? Unfortunately they don't ship to my country.

>>1751303
>Fanuc must really be fucking some shops over.

how so?

>>1751434
low memory

>>1751435

That makes sense, I've got the 31i controller and I can use up to like 4gb compact flash, internal memory is a whopping 512K, so anytime I do 3d surfacing or large programs it goes to the CF card. If you have an older controller you're pretty much sol.

>>1751436
drip feeding for old controllers I hope

ok so I have a thin walled tube od like 1.2 id 9.6 that steps down to 9.2 for the last inch. it has a dent or something in it just before the step which is blocking the shaft that's supposed to go through it. what kind of tool can I make to get the dent out? a plug that I can force through to swage the diameter out? or something I can wrap sandpaper around and try to hone it out?

>>1751647
wait decimals are fucked the id is .96 and .92

>>1751647
if you can jam a cone into it (and retrieve it) without crushing the tube then maybe

>>1751667
I was thinking of making a plug with the smaller diameter that steps up to the larger diameter with a chamfer on the edge so I can just push it through until it stops.

>>1751677
you might have to heat up the tube to get it out, unless you make it undersized then maybe

>tfw fucked up 4 pieces of material trying to make 1 part
>don't really know why, wasn't thinking at all
>part is due to ship tomorrow, i have some material red labeled via ups arriving at 10:30am
>if everything goes perfectly it will be done on time to ship it out tomorrow

Should I go ahead and assume I'm going to fuck it up and notify them it will be a day late?

>>1752092
how can u fuck it up 4 times tell us the problem you are having

>>1752111
it's a 5 operation part I shouldn't have accepted in the first place but I'm gonna get 'er done

>>1752120
>tfw no 5-axis yet

I have a 1/2 slot I need to englarge to 5/8s, but I also can't raise the top edge by more than .015-.020. if I offset the centerline when I recut the slot will part of the original radius make the new ends fucked up? trying to use mspaint as ghetto cad makes it look like it will.

>>1752213
It'll just make the ends flat instead of radiused.

>>1752217
I'm talking about this kind of thing. this is a pain in the ass job where the customer won't give me a print but is going to bitch if it doesn't look like he imagines in his mind. basically all he has said is "make it look the same but bigger" but I'm not even sure if it's possible. if I just cut the slot bigger without changing position it will cut into an important feature on top when I go to re-chamfer the edges. if I try to offset the position downwards the ends will have a double radius. I can't make it longer to compensate because of other shit on the left side. if I recut the slot with a 1/2 or 3/8 endmill and leave the ends flat it would be easier, but then he might complain that it's not oblong anymore. I wish I could draw it up to show the guy before I do anything but we don't have any cad program at work and I don't know if fusion 360 will run on my computer at home.

>>1752241
Turn down the job. It sounds like he is trying to get a freebie by having you do the work and bitching about it not being to spec, and you can't say shit otherwise.

>it's shaping up to be perfection in the form of a part
>every tolerance at +5 oversized limit, more material to remove and still within the +/- 0.005
>couple more operations to go

>>1752428
nope weird issue arose, it's fucked.

time to make another one, better and faster this time.

Can anyone recommend where to find flattening stones suitable for use on machine tables and fixtures etc? I bought a large sharpening stone from Amazon but it is so out of flat it's ridiculous and is basically unusable for my intended purpose.

>>1752587
Tfw scrap the part on the last operation after working on it all week...

>>1752676

We used these in the shops I've worked in.

https://www.amazon.com/Norton-61463687570-Machine-Sharpening-Stones/dp/B0086AF6FA?ref_=ast_bbp_dp

>>1752681
Yep. But at least you have the program now.

fuck me I really work my fucking ass off every time I take a 5-axis job with a piss poor 3-axis machine

can't wait for that fucking 4-axis lathe to get here

>>1753159
>build a business guy
>don't mind all those 18 hour days, it's totally worth it!

Um, my cheap vernier callipers have a 0-offset on them (currently reading +0.16mm when closed), anyone have suggestions for fixing this? I can potentially grind/polish one of the faces down by that much, followed by some work on the front step-measurer and the end depth-measurer, but I can't do that for the ID measuring bits. So how can I figure out how well the ID measuring bits are zeroed so I know how much room I have to remove material? Unfortunately, I have no access to gauge blocks. The problem as near as I can tell is in the way the plates with the units are clamped on, just with three phillips screws each. If I were making such a product I'd drill a hole for a precision pin or two to fit in and firmly locate the pieces, while a screw or two would just provide the downward force.

Also how should I make the sliding run smoother? There a type of grease I should put in there? Should I polish the surfaces? The spring that's meant to be keeping the two parts pushed together and parallel turns out to be copper-plated iron and the copper has worn off in the middle, so I can't imagine that helps.

>>1753408
don't grease it, it will attract dirt

you probably need like a gauge lap, a small ground flat stone would work too. but chances are you will make the reading worse

>>1752681
Oh and I had to grind some tools for it too. Thank fuck they didn't break.

Fucking 0.770" reach 1/16" endmill (0.062") and it fucking worked.

>>1745382
hate how cocky these guys are. any machist/programer can do this ez pz. hell, i'd let my machine operator do it for the video.

>>1752241
I didnt come up with a good way to do this, just scratch it

>>1753600
lol okay, good luck doing it without needing $5k in consumables.

Those kennametal endmills are fucking amazing. In exotic materials like that shit just doesn't work or doesn't go as fast.

Not to mention... Check this shit out: https://myhub.autodesk360.com/ue28fdd8d/g/shares/SH7f1edQT22b515c761ef8205c9cb1993888

>>1753600
Okay I'm retarded and replied in the wrong thread. I also meant to link this fucking thing: https://myhub.autodesk360.com/ue28fdd8d/g/shares/SH7f1edQT22b515c761e16c8c41b6ab8764b

>all those true position tolerances

>>1753611
what do you know?

>>1753626
nothing, apparently

>>1753640
sorry If i was rude. everyone knows nothing at one point or another. good luck.

I miss being in school where we had a stock room with tons of shit just lying around and a tool crib with everything in it. I can't even make fixtures to make my shitty job any easier because there's no stock to make them out of.

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

Nimonic 90

https://www.youtube.com/watch?v=0W_qf6ldZ1Q

haimer probe shank fitting

If that asshole thinks in gonna go in early on a sunday to work to work overtime afternoon shift (who is also gonna expect me to work friday), because my project deadline is feb first, if he honestly thinks im still not gonna dickaround as usual hes a bigger idiot than me

fuck i shouldnt have left all the gay drawings for last. you guys got any protips for holding bs angle brackets so you can square them up ⟂.002 and machine keyways and shit ?

also how many parts do you program and run in a day? not production runs but like 1 off parts.

>>1753851
>I miss being in school where we had a stock room with tons of shit just lying around and a tool crib with everything in it.
yeah, thats life, but school also sucks
>"boss i need material/size to make this part"
>"call engineering and tell them to change it"
>>1752681
>>1752587
im jealous of your integrity
>"boss i fucked up this part"
>"call engineering and tell them to change it"

>>1754011
>im jealous of your integrity

don't be too jealous, I think the drill wandered a little on one of the holes, I half ass measured it and put it on the inspection sheet so hopefully they tell me it's good to go.

>>1754015
>tfw change milling a hole to drilling it and potentially fuck the part

fuck me

>0.008" out on a 0.005"
>this positively affected your score

come again?

>>1754585
Well taking this into consideration it must not have worked out too poorly, they're already offering me more work.

Who else knows the woes of machining iron castings? I'm updating some 30 year old canning machine housings and drive cases for one of the big food products companies and several months later im still surprised by how filthy this stuff is to machine.

>>1754853
All I know is you might filter the coolant afterward, or at least scoop all the cast iron sediment out of your coolant tank afterward.

It's abrasive in it's powder form too, so clean everything good.

>>1754874
It's terrible. At first I was pleased to find out that it doesn't make chips per se, because I have a tendency of getting them stuck in my body. But what it does make is an unbelievable amount of iron sand and dust that gets everywhere. Come to think of it I should probably be wearing a dust mask when I work on this stuff.

As for skimming the coolant tank; I took over this job after a coworker had to get spinal surgery, and I don't think the coolant tank has even been cleaned once since we started these castings. This is after machining enough of these that we've filled several 50 gallon barrels with the "chips"

fuck i love cast iron. when manual machining or grinding, do wet, or use a dust mask because i sneeze black for days after. when doing cnc,(same thing for garolite) i usually just turn off my chip conveyor and use cheese cloth inside of a tray with holes and just collect it all and dump it out after wards . watch out for entry and exit/around corner cuts because you can blow out the corners of the cast and they break off, but this is a feature not a bug, as it makes it self deburring
,
thats really the only woes, the pros include no warpage, and easy cuts, the deep grey luster of a freshly ground piece of cast and the patine that it gets after, so hot. defiantly my favorite ferrous material

Indy engineer fag here. Local job market is fucked for me. I've sent ~50 apps with no responses in over a month. I've taken a screw machine trainee position in the meantime as stopgap employment. I had no previous hands-on CNC experience until now. I was aware of G-codes and the like, but shit school cut them out of the B.S. curriculum, only for M.S. cucklords.

Currently tending two CNC lathes, and it's disturbing to me that we keep our parts in spec on the fly by adjusting a tool's X-Z coordinates for ALL operations within a cycle. Our battle-hardened gauges and calipers have more variation than our tolerance ranges, and we have no time to average out measurements. They put me on night shift after my first week (my only experience) because production schedules are very late. It's an absolute nightmare, yet I love the constant neverending puzzle-like adjusting. The leaking factory roof makes me scream internally as I see puddles form around the measuring devices. This is "business".

Ranting aside, I need to make myself a monster. I'm here to train, and I want to learn everything I possibly can so when someone comes to me with a problem, I'll have the knowledge and experience to fix it. What can I do from home that will make me a more formidable person in this field?

Is there a better cheap clamping technology than this?

>>1754886
I think the Haas channel on youtube had some chips for working on cast iron recently.

Or was that orange vise or pierson workholding? one of those

>>1754990
>cheap
doubt it

>>1754990
Muh double sided tape meme

>>1755040
yeah can confirm that's a meme mostly

just super glue it down and clean it off afterward if anything

>>1754987
Just 50? Damn son, I'm on a year after graduating and have over 250 applications out with like 5 actual interviews. Market is super fucked for us. I'm seriously considering going back for software engineering.

Oh btw, industrial mechanic is a good job in the interim. Allows you to put hands on equipment and understand how it works. Also, everyone and their grandmother needs mechanics.

>>1755069
i find that hard to believe, machinist is the same thing as frycook, nobody wants to do it, everyone wants a cushy office job, so fry cook and machinist positions are always open

>>1754987
fusion for cad/cam ? buy your own calipers and micrometers?

>>1755071
>i find that hard to believe
I graduated as a mechanical engineer. In my area of 50 miles, which includes a major city, everyone wants 3-5 years of experience. The market is so saturated that anything else isn't even considered.

https://www.youtube.com/watch?v=0nCnGl6Sb7s

muh dick

>>1755077
You must be looking into the dinosaur machining where you turn dials and shit to move the machine, so it is saturated by boomer machinists, but i bet not that many machinists are experienced in shit like 5 axcis cnc usage and CAD making for it

>>1755078
it sucks living so far out in the woods that i can't find a rigger to unload the machine for me until next week

>>1755080
No, you misunderstand. I'm trying to be a engineer, not a machinist. But, on the subject of 5 axis machining. It's not so bad doing the cad/cam for it, but it's just tedious.

>>1755090
then you have to move. engineer jobs aren't very common like waiter jobs etc, you have to widen the search area to include your whole country and possibly even consider relocating to another one
my degree was in EE and i ended up working as a software dev for the past 10 years, but i've no doubt that chinks and pajeets are coming for my job any day now

This machine https://www.maquinariadonosti.com/used-machinery/milling-machines/milling-machine-fexac-um for 1600EUR, should i go for it?

>>1755092
What kind of devops do you do? I'm just wondering because programming always facinates me. Kind of off-topic but whatever.

>>1754967
The only thing I don't like about cast iron is when there a chunk of carbon in the material and you find it with your drill bit and it snaps the drill.

Non machinist retarded cunt checking in.
>2 exhaust manifold bolts and two spark plug have been progressively getting tighter on iron head
>first time they just felt a bit tighter like maybe some shit was jammed in the thread
>second time worse
>third time like its cross threaded
You think a thread chaser down the thread and new bolts would clean it up?
Also is 3/8 unc all you need to know regarding thread size? The taps and chasers im looking at seem to be 3/8 - 16

>>1755313
yeah, clean up the threads first, and re-tap second. if you re-tap the hole then you're going to need to clean out the chips so you don't get blockages.

>>1755337
So you still need to retap the thread after using the chaser? Do you have any tricks to not get swarf and shit into the combustion chamber when doing the spark plug threads?

>>1745535
The smarter you are the faster the process is

>>1755223
looks okay make sure the Y axis isn't worn out

>>1755078
>tfw doing the cam for the 6 operation part I just did with the capabilities of a live tool lathe

>it's like a millturn

I think I might be able to print money with this thing.

>>1755313
3/8 is just the nominal diameter. 16 is the threads per inch. you have to get a tap that matches whatever you're trying to screw into it.

>>1745345

hows the best way to find your center mark on anything round or circular if you're using a tape measure

>>1755466
Thx. Ill have to try counting them

>>1755419
Do i twist the bed and see if it moves?

>>1755569
yeah or sell something and buy a used cnc instead

actually the prices on used cncs are comparable to manual lathes and stuff over here

>>1755581
https://www.kdcapital.com/product/1990-matsuura-mc760vx/

https://www.kdcapital.com/product/1993-okuma-mc-4vae/

https://www.resellcnc.com/products/used-cnc-verticals/01tf10000052LJ1AAM/kira_vtc-30e

https://www.resellcnc.com/products/used-cnc-verticals/01t3Z00000560vqQAA/mazak_vtc-16a

https://www.resellcnc.com/products/used-cnc-verticals/01t3Z000004svNWQAY/hurco_bmc_4020_ssm

>CNC machines $10k and under

>>1755581
>the cnc machine had way covers for its lifespan probably

https://www.youtube.com/watch?v=N1kScc8nwiE

>>1755473
How accurate does that center mark need to be? What do you need it for?

>>1755473
>using a tape measure
measure and mark just shy of the center on lots of points around the circle, making a tiny circle in the center. Eyeball center from there

>>1755473
no idea how to do that with only a tape measure, don't you have a ruler or something like that, and a compass? It's way easier.

>>1745533
wrong, it's always the centerline of the spindle.

>>1747349
it does...

why the fuck does 1mm endmill cost $1 and 0.2mm endmill $10?

>>1756293
Supply and demand. More demand for the 1mm than 2mm

>>1756271
Fusion does peck tapping?

Neat.

For milling pcbs which are copper layer on fb4 (fiberglass) which is the best? Pure carbide, gold coated carbide (titan) or blue coated carbide?
As for the shape i assume corn is best

>>1756572
CVD, it's not even a contest.

http://www.harveytool.com/cat/Diamond-End-Mills-for-Non-Ferrous-Materials/Material-Specific-End-Mills/Browse-Our-Products_247.aspx

http://www.harveytool.com/cat/End-Mills-for-Composites/Material-Specific-End-Mills/Browse-Our-Products_248.aspx

Hey guys do you like the new color?

>Amazon has deal on Mitutoyo Digital Caliper 0-6"
like $100 guys

https://www.youtube.com/watch?v=qdUX0eLGr2I

toothpick challenge

>>1756977
Make sure it's not fake. Google "mitutoyo fake vs real" for MANY useful posts.

>>1747351
Yes? I work in a job shop, it's kind of necessary.

>>1756992
oh sweet so maybe you can tell me if it's possible to get through spindle coolant drilling on a cnc lathe, static holder just like a kennametal godrill or something thru coolant, is there normally a way to pipe the regular coolant outlet into the drill holder?

>>1756991
If it's Amazon the third party seller will use an image of the real one and send you a fake.

>>1745345
anyone else take a file to tools like that whenever someone borrows them to you or you find them?
it feels so good to know all the work someone does with it will be fucked up until the retard figures it out

>>1757006
I'm a mill guy, not lathe. It probably depends on how the coolant lines are set up but I guess you might be able to figure something out if you really look at everything.

>>1757020
You'd get dragged into the shipping dock and get the shit kicked out of you for doing that at my shop.

>>1757020
But...why? This just seems like an asshole move tbqhf

>>1757023
lol you'd never know cuckyboy also im a black bely and carry a gun good luck

>>1757020
>>1757025
Nice LARPing

>>1757027
A9in't a larp bitchyboy, I do it to every caliper I find, it's fuckin hilarious.
Friend was getting pissy that his expensive ass pile of shit wouldn't measure right so he bought a new pair and I did it again lol he was fucking fuming and they wouldn't even refund him because they told him he modified it he was so pissed

>>1757029
cool tale fellow

>have my tools in storage for a while when I was moving
>a bunch of tools I made rusted shut
>test indicator doesn't work when I take it out
>now today I can't find my edge finder
fuck this I should have just taken my entire toolbox with me

>>1757051
Yep. Could ask the storage place how much to install one of those cheap dehumidifiers, they're a wall/ceiling mount unit and run on electric.

>>1757029
>A9
use that shit all the time

HSK vs Capto vs KM quick change lathe tooling?

HSK is standardized stuff, Sandvik Capto is supposed to be more rigid and a lot more expensive, Kennametal KM is pretty neat too.

>>1757029
>I'm gonna ruin hundreds of dollars worth of tools just for shits and giggles.

Fake and gay. Although assuming it isn't that's like calling 1-800-Collect an ass whoopin, and that ain't a toll free number.

>>1757006
Assuming you're the guy who bought the mori seiki, the way we did it where i worked is they used plastic tubing meant for compressed air and used that to pipe coolant into udrills and collet chucks with plastic tubing quick connectors. On some udrills and collets chucks theres a thread part in the back, i don't think its meant for that but thats how we did it.

>>1757096
Capto is the best if you can afford it. I looked at a mazak 5th axis mill in it and I about lost my shit.

I instead went with a used okuma that I picked up for the price of like 5 capto toolholders

>>1757006
Yes, I use allied machine drills all the time and just pipe it into the back of the drill. If you're talking about live tooling then you can buy an adapter that allows the use of sealed er collets and shoots coolant tsc, facinating little thing. I'll post a pic if I ever remember.

>>1745345
>find local makerspace
>it has a bridgeport mill, some mini CNC equipment and some other metal and woodworking shit
>want to try milling as a "just in case" skill
>no checkout classes for the mill
>wait about a year
>still no classes
>place is usually dead from what I can tell
>I could probably just walk in and start using the mill and nobody would stop me unless I very obviously break something or make it obvious I don't know what I'm doing
Could I just watch some videos and practice on a block of wood, or am I asking to lose an eye or a finger since I don't have any formal training?
Or is this a retarded idea anyway because I'm not planning on becoming a professional machinist?

>>1757372
I just walked up to a lathe and started using it one day, then soon after bought my own and learned on that.
I mean, I could still lose a finger or arm in the future, but it's not ridiculously hard to learn how to use them, assuming you at least understand speeds and feeds. Although it'll probably be obvious to someone who knows how to use the mill that you don't know how to use the mill for the first 5-10 hours.

>>1757372
You might screw up the machine or table or vise, which is probably worse.

>>1757331
Alright I might look into what's available before rigging it (assuming I still have money left).

>>1757519
I would assume theres more elegant solutions but thats what we used. I think its called nylon pneumatic tubing and pneumatic fittings, looked like pic related.

>>1757525
oh yeah those quick connect things, I have some of those laying around.

also got some special silver filled tubing for it that is supposed to avoid bacteria growth, might be perfect for piping coolant.

just got a job as a machinery mechanic helper. I have the opportunity to do an apprenticeship at no cost to me, or I can swap to electronic mechanic. Both interest me but I do desire money for future financial endeavors. Are there any high paying career opportunities for such trades?

so I had to shave off .020 from a metric bolt so it would fit through an inch clearance hole, but I had no collets or anything to hold it with. I tried to make a nigger rigged one by making an aluminum bushing and hack sawing 3 slots in it, but I ended up with runout so now the bolt only has threads on one side. how should I have done this?

>>1757572
ER collet

>>1754853
I worked in a cast iron vice making factory. I operated the machines that milled the slide and heads, and also cut the jaw seats. I was glad I was given overalls, because holy fuck they started out orange and by the end of the day they were blacker than a ghetto. Cast iron machines wonderfully, but it's absolutely fucking filthy!

>>1757572
Belt sander and good hands.

>>1757575
don't have any or a collet chuck. can you use a collet block in a regular chuck or will it throw the part? I don't have any 5c collets anyway though.

>>1755071
>machinist is the same thing as frycook

"Machine operator" is the same thing as fry cook. No programming, no setup, no fixing design issues, no troubleshooting, nothing that requires any kind of real responsibility. You babysit machines, unloading an unloading as necessary, and you call someone else if anything out of the ordinary happens.

How much this is true depends on the position/shop, obviously. Generally, an actual machinist will actually have some capacity to, you know, do machine work, rather than just wait to be replaced by a something from ABB or KUKA.

>>1757572
by making the clearance hole bigger .020 is a lot of threads for most metric bolts you are probably better off with the bolt with 1 good side of threads

>>1757531
thats gonna really depend on your coolant pressure. at my work they use stainless lines with compression fittings

>>1757638
can't make the hole bigger it goes through important stuff. it's a 5x.8m thread so the class of fit would probably be shot even if it had come out right. my other option would be making a new bolt, but then I would need to make a new nut too and I don't have the material for either one. the main problem now is that I can't torque the nut on. it turns part of the way and then slips. I put some loctite on it but I don't know if that will cut it.

>>1757614
don't try holding threaded rods in 5c/r8/2j precision collets, ER collets will actually collapse far enough to grip it, precision collets won't.

>>1757667
well the only collets I have are r8 and none in that size anyway

https://www.youtube.com/watch?v=ST82nmMz6Yw

Jeezus cam takes twice as long for millturn parts stuff, but it's worth it.

>>1757769
What? In most cases you just place a plane on the axis you want it to cut and it calculates the x,z, and c axis it needs to do so.

Looking for advise on how to adjust how much my cutter comes off my part when using G71 to bore. Running a HAAS TL1 and for some reason it comes off the part over .100" after taking a cut. I don't have a manual and can't find anything in the settings.

>>1757786
Nah it's all about reaching the features on the backside near the chuck, you can reach them but it's tedious to do so. And you definitely want to do so, because you can get it done in one operation with one spindle.

If I get the subspindle working it might be a whole different thing though.

>>1757796
Get the thing powered and running programs first

>>1757865
workin' on it, it's all lined out for wednesday I'm just cleaning up the site in preparation.

having a chip conveyor is going to be pretty damn nice I think

>>1757794
https://www.haascnc.com/service/codes-settings.type=gcode.machine=lathe.value=G71.html
says setting 287

Is $500 a good price for a clean looking Harbor Freight 42976?

Turn Wright Machine Works guy is losing his house in a divorce and needs help to move his equipment to a new shop.

Patreon page up.

https://www.youtube.com/watch?v=zx0jCtgsxck

>>1758118
Basically every dollar you put into mini equipment is going to be wasted unless your parts are hobby-tier.

>>1758118
It is the perfect machine for drilling slightly oblong holes and slightly cockeyed angels in stock much smaller than its claimed maximums.

If you are fine buying used anyway just get an old American made drill press and mount an XY table on it. Where are you located? I will check Craig's List and other sources and see what is available. You should be able to get a nice machine for $500.

>>1758124
>Because of the divorce, the property is going to be sold and Turn Wright Machine Works physical location is going to have to relocate. I have been offered a prime location in nearby industrial zone over in South Dennis, 159 Great western Road, that will suit a machine shop, however, the condition of premises needs many costly upgrades to properly support turn Wright Machine Works to the standards that I demand.

>>1758126
Shit, forgot to ask, what are your power options? 110 volt obviously but do you have access to 20 amp outlet? What about 220 volt or three-phase?

>>1758125
(or unless you can re-sell it)

>>1758125
I'm not a machinist. I'm just some retard in a garage that could use a "mill" a handful of times every year. I have a tiny lathe (pic related), which comes in handy every so often. I don't expect to have the space to house a full sized machine nor the means to move it.

>>1758126
I have a 20" harbor freight drill press. I could put an XY vise on it, but I was always under the impression that was a foolls errand. An even bigger fool's errand than hobby-sized machines made in China. Now that I think about it, the drill press hasn't been turned on in at least a year. I use my mini lathe more often. Strange.

>>1758130
110v, 15A. I'm a renter.

>>1758124
>>1758129
Don't get married these days?

>>1758145
Why not get a milling attachment for your lathe?

>>1758286
because my lathe is an HF 7x10, so it's basically microscopic in scale.

>>1758124
>28k of 15k goal received so far

sheeeeit clearly he is providing something of value for machining

fuck
probing is very dangerous
i lost 3 endmills in two days to small mistakes during probing, like probing into a small area not connected to the ground clamp of the stock etc
this is getting expensive

>>1758340
>ground clamp of the stock

Sounds like you're doin' it wrong... Maybe the Tormach hobby-tier probe would work better?

>>1758354
I use wooden wasteboard to sit my stock on so i have to connect a clamp to the stock to get a circuit going for the probe

>>1757794
If your machine is using the 2 block format for the g71 call then in the first line add R(amount). For example G71 U.1 R.05 will set the retract amount to .05

>>1758355
...post a pic of your set up

Quick question for you people: I'm drawing at CAD an object that later will be made with a CNC mill. It's made up of more parts that screw themselves together. The threads will be probably added later by someone who's practical of it (paid professional). How much room (in untouched metal) should I leave in the diameters design for the threads?

>>1758524
If I understand your question correctly, look up a tap drill chart, it'll tell you what drill bit to use for what size thread you want.

>>1758524
Depends how the threads are going to be put in, are they going to tapped or thread milled?

>>1758524
Here is a good starting point.

>>1758545
i'd say thread milled/lathed. It's rather big, between 30 and 35 mm, I have no idea if a tap/die that big is even a thing
>>1758541
>>1758549
thanks i'll look for a metric one.

>>1758549
>>1758541
found this but i do not understand a thing:
the 4th column is the drill bit size for the tap and it's smaller than it and that i can undestand, but if the 3rd column is the diameter of the male part that goes through the die why is it smaller? Shouldn't it be around the same as the final one considering the cuts that the die makes in the metal for the thread? Or is it more than just cutting and the whole thing gets reshaped?

>>1758570
The die will remove material even at the top of the thread pitch. If you used smaller stock then the top of the thread pitch may be flat and you would not get a full thread.

Is there a special name for the dial on your crank with graduations on it?

>>1758639
if that so should the core diameter be bigger than the nominal diameter of the thread? Or is that value something else? In the table I found it's always smaller

https://www.youtube.com/watch?v=l5fD_GtoUAE

>>1758564
At my job we have taps up to m45, so yeah they exist

>>1758887
yeah, thought about it a bit and realized that simply there are parts that can't be mounted on a lathe so they are a necessity

>>1758941
even on a lathe you may want to use a giant tap sometimes

>>1758944
way ahead of it, i'm looking for a mortician

>>1758944
wrong reply

>>1758564
>>1758887
>>1758941
>>1758944
We have 3" taps at the shop for retapping or chasing ground anchors for holding giant things in place like shipping container ships, buildings, etc. They are 3 feet long and have to be picked up by a huge polish powerlifter or a small crane.

>>1759063
I got a 2.5 inch tap once from work. It was fucked up but I used it as a weight in a can crusher.

>>1759065
That's a spensive can crusher weight

I fucked up. I foolishly accepted a job where I get paid based on labor billed to the customer instead of hours I'm actually in the shop. I thought it wouldn't be any different but I didn't account for
>time cleaning up = don't get paid
>time talking to boss about jobs = don't get paid
>time helping other people = don't get paid
>time where I can't start on a job because stuff for it is being ordered = don't get paid
plus I'm working slowly because I'm afraid of fucking up if I go fast so the time when I'm actually working ends up being underreported. I'm at the shop 45 hours a week but I'm only getting paid for 20. I really need the experience for my resume and don't want to quit after only 2 months but this fucking sucks.

>>1759245
Quit and work elsewhere. Lie about your experience, say minimum 1 year. If boomers want to push shitty requirements then fuckem

>>1759245
is there ever a benefit for taking a job like this?
Like is there an illusion that you get paid a lot more or what?

>>1759150
HSS or steel?

that thing could be a scrapyard goldmine

>>1759245
Why don't they bill setup time to the customer?

>>1759266
They probably do, they just dont pay this schmuck for it.

>>1759274
so he's like an intern they pay half wages to?

>>1759281
It sounds like a shop that takes people with little or no experience or degree and screws them because they dont know any better.
They are in every trade, and the second you wise up you leave.

>>1759283
well that could be, but if the business he's working for is a good one maybe he can negotiate better pay after a couple months?

sometimes on youtube you just have to laugh

https://www.youtube.com/watch?v=g41YihsSivo

Im not in the trade, just a hobbyist
I used a HSS spiral tap for the first time tonight and holy fucking shit.

It was a used Nachi I got somewhere, I dont even remember. It cut like butter in steel easier than my NOS USA made vermont american carbon taps cut in aluminum.
Truly an enlightening experience.

>>1759305
they still make plain steel taps? not hss or hsco?

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

>>1759314
All the taps made by Irwin, Century, Vermont and other random taps you find at a big box store are "high carbon steel". Spongy as fuck and they dont cut worth a damn

https://www.youtube.com/watch?v=HSFI17_4Yjs

>>1759343
damn shame

thoughts on sherline 4400s? I can't get anything bigger

>>1759418
Can you make money with it? Are you investing in yourself with it? Will you one day have a sprawling factory full of half million dollar machines?

Is two m5 bolts too much to hold aluminium sections together a foot long each

NEW/USED MACHINE DAY

don't worry I'm taking pictures

>>1759496
phew thats a big sob

the crew is in the process of performing a miracle

almost in the door

so uh, each strand of wire is thicker than the wire I was going to use to power it...

oh shit it came with an oil temperature regulator too, and manuals and tooling

>>1759569
>peeking through the plastic wrap
>yep, pretty sure that's a live tool holder

fuck year

>that feel when even the chip conveyor has a VFD and a washdown hose

>48 kva
>51 hp total

no fucking way, it's fucking bolt-on and not VDI

https://youtu.be/-cmteYogVCg?t=14

GIANT STACKS OF TOOLING

ALL GOOD SHIT

>>1759519

>>1759552

>>1759627

>>1759608

so for removing pegs from blind holes am I better off drilling or plunging with an endmill?

>>1759758
is the bottom of the hole flat or drill-point shaped?

>>1759829
I don't know. I'm guessing they were drilled.

>>1759857
drill I guess, is the pin hardened?

good luck

>>1759858
one of them is probably drill rod. another is also hardened. my concern about drilling is that if I'm a little off I won't be able to reposition. it isn't possible to sweep in the location. one of them I already drilled with a smaller diameter thinking I could thread the hole and yank it out, but it's too small. I heard you could try to weld a wire into it but I don't know if I can weld well enough for that.

>>1759859
i don't know nothin man, go with your instinct it's probably right

I'm busy 'mirin' my bolt on live tool holders, all 7 of them.

NEW THREAD:

>>1759876
>>1759876
>>1759876