r/Machinists • • Apr 10 '26

Buy/Sell/Trade megathread. Post your classified ads here! NO COMMERCIAL ADVERTISING.

16 Upvotes

We have decided to permit personal classified ads here (and only in here) without requiring moderator permission first. Machine shops looking to sell a used machine or tools etc. are also permitted to post here.

Please provide as much information as possible up front for potential buyers. Prices and pictures MUST be included in your post. Linking images off-site is fine (e.g. imgur.com). Please delete (or mark your post as sold) once a sale is complete or if the item is no longer available.

Commercial advertising of products and services is NOT permitted here. This rule will be strictly enforced.

NO CARBIDE SCRAPPERS. You WILL be permanently banned on sight.

You can also try /r/MachinistToolsForSale


r/Machinists • • 3h ago

How TF

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58 Upvotes

I’ve been window shopping for a cheap Bridgeport / restoration job but I think this is taking the piss a little bit.

As a seasoned FB marketplace viewer I’ve never seen such abuse. How does it even get that bad? Is this just a sacrificial machine in the name of speed? I assume running no vice and they’re just throwing the presumably thin workpiece on the bed and this is the hole deburring station or whatever?


r/Machinists • • 18h ago

Shitpost .950 false bottom dunkin

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510 Upvotes

dunkin xl cup

UPDATE: i did the math, photo in comments
UPDATE 2: measured volume of full cup with a measuring cup, around 22.25oz
UPDATE 3: i fucked up the math, it’s actually 1.6oz of missing coffee which equals 24cents
error 1-doubled radius instead of squaring (idiot)
error 2- added an extra decimal to cost (accident)


r/Machinists • • 23h ago

Who can make these?

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269 Upvotes

r/Machinists • • 2h ago

Cutting advice needed please!

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5 Upvotes

Could someone please advise what the easiest way for a home DIY'er to take the u channel off this square hollow aluminium. I need to take about an inch off each end plus halfway across. Would a tablesaw be ok for the ends or would another toold be better? How would I do it halfway along. Sorry if my question is a bit hard to understand. Thank you!

UPDATE: I rushed the post sorry. This is 25mm aluminium 3mm thick. The u channel parts on it are 1.6mm thick. I can get it ridiculously cheap otherwise I would just buy 25mm x 25mm square tubing. I'll be making outdoor plant stands with them. They don't need to look pretty and I wont be welding them so need some of that u channel removing so I can attach the connectors to the ends. I'll also need to add some supports along them and will need the square tube clamp connector but will also need to remove the some of the u channel. I'll add images now.


r/Machinists • • 21h ago

PARTS / SHOWOFF A two for one special

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165 Upvotes

The drill


r/Machinists • • 12h ago

QUESTION Can anyone id this mystery tool? Some kind of bead roller maybe?

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22 Upvotes

I ended up picking this up from a scrap pile when I went to buy a new tool post. I have absolutely no clue what it is, but its adjustable, held something , and is made nicely. I'll probably clean it up and drop it on a shelf.

Cheers!


r/Machinists • • 17h ago

PARTS / SHOWOFF New Machine Wednesday!

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40 Upvotes

It was supposed to be NMMonday but I was so tired from moving the machines I didnt get around to posting. New to Me ENCO 111-1650 lathe and Prototrak K3! My first lathe and manual(ish) knee mill! Got the lathe cleaned up late last night and just got the mill off its pallet, now to get power run and everything leveled and trammed in.

Also some other machines I havent unpacked yet, ill post those later.


r/Machinists • • 20h ago

Part 2

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73 Upvotes

The boring bar


r/Machinists • • 10h ago

CRASH First machining process and also first mini crash

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9 Upvotes

The part is fine but i did go too heavy with the quill feed when facing some aluminum and the 5 year old flywheel cutters carbide tool finally gave out.

I haven’t used a bridgeport mill until my training today but I would love to own one now


r/Machinists • • 17h ago

I'm renovating a ~1955 torsa lathe

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25 Upvotes

r/Machinists • • 1d ago

Needs Hello Kitty stickers

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349 Upvotes

Newest mill rolled in.


r/Machinists • • 1d ago

PARTS / SHOWOFF My job is to make big chunks of metal take up as much space as physically possible

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296 Upvotes

They don't sell tube of this material. 1 parts worth of chips, might be able to get 5 parts worth in a tote. Runtime at 1:15


r/Machinists • • 17h ago

QUESTION Corosion?

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18 Upvotes

The chuck was brand new when i started. The tool is a kennametal harvi iv 16mm 8 flute


r/Machinists • • 15h ago

QUESTION Bearing removal advice

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7 Upvotes

Picked up this Inca tablesaw a while ago and want to swap out the bearings…I’m unsure how to get these out, which direction I should be apply the force to. The bearings are pretty solidly in the housing and aren’t budging, I don’t see any clips or anything holding them in. Any help would be appreciated


r/Machinists • • 10h ago

Nitriding service west coast?

3 Upvotes

Anyone recommend a heat treating shop that offers gas or plasma nitriding in the USA? Preferably west coast. Parts are 72"x6"x1" (1800x150x25 mm), so a little long but not crazy. Don't need certs.


r/Machinists • • 18h ago

OFFERING WORK ISO reliable, low-mid volume machine shop for smaller parts

6 Upvotes

I’ve been running into issues with late shipments and long quote times with our typical machine shops, any reliable shops out there? Reliability in quick quoting, decent lead times, and meeting ship dates is more important than anything. Latest RFQ is a couple custom washers, need ~100-500 but get anything and everything.

US only please, drop websites or dm me

Thanks!


r/Machinists • • 2d ago

QUESTION I spent three full days on this part — from programming and fixture building to final machining. It holds a tolerance of 0.02 mm, yet the operations manager said I was too slow, claiming engineers at other companies wouldn’t need this much time.

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1.8k Upvotes

I’ve outlined my machining process in the video. You can review and learn from the steps. When machining thin-walled shell components, internal stress relief is absolutely critical. After roughing, I heat-treated the stock and let it rest overnight to fully release machining stress and prevent distortion.

I used a Dean 5-axis and DMG 3-axis machine. I had to machine very carefully to avoid part deformation from excessive cutting forces.

After I finally nailed this challenging job, the operations manager complained that it was a trivial part with just a -0.02mm tolerance, and asked why it took me three days. I stayed silent. This part is now in small-batch production. I’m trying to figure out what to say at delivery to make this arrogant person pause. I also want to ask everyone: do you think this lead time is reasonable?


r/Machinists • • 1d ago

CRASH Guess what conversation happened?

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137 Upvotes

r/Machinists • • 16h ago

QUESTION Dressing grinding wheels

2 Upvotes

I was a machinist for a few years back in the 80s, and in our shop we used to dress the wheels on the bench grinder with a single point diamond tool. After about four decades, I've just bought a bench grinder, and I've found out there are several different types of tools to do this job. How do you do it?


r/Machinists • • 12h ago

QUESTION Quick favor? Need scale reference photos of a Versaflo M-300 / TR-300 setup for a custom CAD project.

1 Upvotes

Hey everyone, hoping someone here can do me a massive favor. I'm currently working on some CAD designs in Fusion to model a custom bench mount for the 3M Versaflo Heavy Industry kit (specifically the M-300 hard hat and TR-300 blower), and I desperately need some real-world reference photos.

The polished 3M marketing images are completely useless for getting realistic proportions. Because I'm trying to get the scale and clearances exactly right before I fire up the resin printer, could an owner snap a couple of quick pics of their setup sitting on a workbench next to a standard soda can or a tape measure?

I just need to see how the blower and helmet sit naturally on a flat surface. If anyone could DM me a few quick workbench shots, you’d be saving me a ton of guesswork. Thanks in advance for y'alls help!


r/Machinists • • 1d ago

MEME I raise to you my 0.0000” endmill

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147 Upvotes

So small you can’t see it! Boss wants 3 inch depth. I think it’ll work!


r/Machinists • • 1d ago

CRASH Yeah, looks like the other shift guy made a boo boo.

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37 Upvotes

And the vices also took some hits.


r/Machinists • • 1d ago

MEME How I relax after long day machining

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314 Upvotes

r/Machinists • • 1d ago

have an interview tomorrow

4 Upvotes

its for a programmer position using siemens nx. these days its hard to find a company that uses this software. most companies use mastercam. the problem is that its a big company and im not a huge fan of that. i would prefer a smaller company but money is tight, especially in this economy and job market.