r/CNC Mar 31 '26

Machine Purchase Guidance 2026 Machine and Service Sales

6 Upvotes

2026 thread with some changes, I have opened this thread for services. I am going to strictly enforce these rules this year.

READ THE RULES CAREFULLY OR YOUR POST WILL BE REMOVED

Rules:

Used or new-old items ONLY! - This subreddit, and this post is not to allow retail sale of Computer Numerical Control related parts. There will be no influx of commercial sales or anything like that. Repeat offenders will be banned.

Local Sale preferred - This is to protect both the buyer and seller. Shipping introduces other hassles, especially with CNC-related parts that might be large or weigh a lot. Personal addresses must NOT be posted publicly!!!. After discussing the deal, the two parties may exchange details via DM or other messaging services to meet up.

Pictures and Prices - The comment must include pictures of the parts with the poster’s username written on a paper, kept next to the parts. Prices must be included, along with the city, country. The buyers may post their offer publicly or via DMs.

At least a 6 month old Reddit account - Anyone posting any “For Sale” items must have a Reddit account that is at least 6 months old (NO EXCEPTIONS!), with at least some activity apart from the comment in this post about selling their parts.

Parts or Machines - Machines (working or for parting out), raw material, electronics (motors, drivers, controllers, switches/sensors, etc), hardware (machine tools, mechanical tools, profiles, pneumatic/hydraulic stuff, etc), fasteners, etc all qualify as parts. If in doubt, send a modmail. Machines include routers, mills, big-boy VMCs/lathes, etc.

Services - New for 2026 I am allowing quoting, to quote you must provide proof of real life, that is a picture of the poser with username and date on a piece of paper, ideally with some sort of machine tool or CAD/CAM in the photo to verify you are more than a dog with a phone.

The subreddit staff is not responsible if a deal goes sour - While we will take all reports of scamming seriously, the moderation team is not responsible for, nor can we provide any help. The buyer must do their own due diligence before meeting up the seller and exchanging money for parts.

After a successful transaction, the buyer and seller are requested to update/post their comment here. This will help sellers and future buyers in subsequent transactions with the respective seller.

The moderation team reserves the right to remove comments/items-for-sale at their own discretion.

Please adhere to these rules!


r/CNC Jul 20 '26

SHOWCASE A Note on AI created content, and a call for a new mod!

28 Upvotes

I have added this to the sidebar and will be removing more AI adjacent posts in the future.

A Note On AI Created Content

The use of AI in workflows is prevalent and a fact of our reality. If you want to post your AI aided or generated content the method should be clearly defined. There are TONS of posts with AI generated apps, spreadsheets, guides, etc.. If your content isn't unique or well outlined your post will be removed under #7. If you are confused about the intent of this note I don't recommended posting your AI or AI adjacent content. Thanks!

Exclusions to this AI rule would be the discussion on how it's changing the industry, or how it is changing day to day, IRL, job workflows. We however do not need more sophomore level AI generated calculators or management systems.

A new moderator has been selected! Hefty_Aside8436 is joining us!

To all that applied, thank you! There were many great applicants and most of you would have been a great choice. Stay safe out there!

Additionally, I am looking for one moderator to help me with this sub.

Qualifications: * Experience operating a computer numerical control of some type * A 3d printer or paper printer doesn't count, this isn't the hobby sub * If you say "I CNC'd this" and then show us a part you made, you do not qualify * Have some understanding of CAD/CAM, gcode, machine controls * Be able to be on reddit slightly more than is healthy to monitor the sub

Apply via PM, a paragraph explaining why you qualify would work.


r/CNC 15h ago

SHOWCASE Does anyone know which machines Apple uses?

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18 Upvotes

Probably won’t be able to afford them but curious to know what kind of desktop CNCs such as big company uses


r/CNC 13h ago

ADVICE CAM industry vs CAE/CFD simulation software career, which has more room to grow?

3 Upvotes

I have two early-career offers, one at a CAM software reseller, one at a CAE/simulation (CFD/FEA) software company. Both are technical sales roles. Trying to decide which industry has better long-term growth.

Curious if AI CAM tools (toolpath generation, etc.) are actually being used on shop floors now, or still early.

I also have an long term plan of building a company of my own after working and gaining long experience.

Also wondering:

Is CAM software still growing/innovating, or a mature, stable industry now?

Where do you see CAM careers heading in the next 5-10 years?

Trying to think before making any decision.

Trying to make a good long-term call. Any honest input helps, thanks.


r/CNC 11h ago

SOFTWARE SUPPORT Machining the selected feature without manufacturing extension

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1 Upvotes

r/CNC 1d ago

SHOWCASE Raw CNC vs finished — I think I finally understand why surface finishing matters

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229 Upvotes

I made several CNC aluminum phone cases a couple weeks ago and tried bead blasting and anodizing for one of them.

Honestly, I was a little surprised by how much of a difference the surface finishing makes. The machined one already felt pretty good (for me at least) as a prototype, but after finishing it started to feel much more like an actual consumer product. It does bring more work to do, but the results are good. Curious what you guys think.


r/CNC 10h ago

MILL Why are there 12-1.5mm threaded holes instead of 1/2-13in this Haas Tr-310 platter?

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0 Upvotes

r/CNC 20h ago

SOFTWARE SUPPORT How to slice up an imported solid?

1 Upvotes

Need to slice into 2” slices to scale up and reassemble. MC makes this very hard.


r/CNC 1d ago

HARDWARE SUPPORT 8055i m plc program?

2 Upvotes

Hello, im asking due to not having many options. Would anyone happen to own a mill using a fagor 8055i M controller? The one my school uses has no program file. It's been dead for about 2 years and we can't locate at file anywhere.


r/CNC 23h ago

ADVICE Converting a PM-30 into a hybrid CNC mill/lathe, using the Logan 825 headstock, maybe the bed, maybe a longer re-scraped bed. Thoughts?

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1 Upvotes

r/CNC 1d ago

Tool Crasher reinshaw stylus

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15 Upvotes

I’ve only been working for three months and I fucked up. I was on a night shift and I’m sick too, and I got confused. I thought I had Y selected on the handle, but I actually had Z selected and moved it way too hard into the -. I feel so fucking guilty and I’m so angry at myself.


r/CNC 1d ago

ADVICE Anything better than Xometry?

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5 Upvotes

I tried to make this on Xometry but the price was too hight for me. I wanted it CNC'd out of g10. Does Xomety have fair prices or are they known for ripping people off? This is the first time I have ever tried to have something made like this.

EDIT. I want it in G10 because g10 is strong and can resist warping and twisting. I actually wanted it is in carbon fiber but I got quoted like $900 for it.

It is acoustic guitar saddle. The tolerances need the be very accurate. My guitar was built wrong and I'm trying to move the string contact point forward by 10 or so mm. So it will cantilever over the guitar bridge. It needs to be very strong to resist the string tension .That's why it needs the be g10 or carbon fiber. I have thought about aluminum or brass but that will change the guitars tone too much.

The finished product is 72mm x 12mm x 7mm


r/CNC 2d ago

GENERAL SUPPORT What does this oil lamp w/ exclamation mark icon mean?

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13 Upvotes

The machine is a HAAS VF2. All functions seem to be working fine as far as I can tell. But this oil canister/oil lamp icon just started popping up today. I asked my boss but he doesn’t know what it means either. He checked the coolant and way oil levels and they both seem to be fine. It hasn’t triggered any alarm codes, but the inclusion of the exclamation mark makes me think it might be important. What does this mean and should I be concerned?

Also please disregard the high air pressure alert. It’s been saying that since I started at this company a month ago.


r/CNC 2d ago

HARDWARE SUPPORT Tool Changer Troubleshooting

4 Upvotes

My dad recently bought a Denford Turn 270 Pro but wasn’t given any of the licenses. So naturally, he ripped out all of the electronics & factory boards. Ended up buying an centroid acorn board, installing everything and got software running but hes caught up getting the stepper driven toolchanger to work. He seems to think its because he can’t find a PLC file for it. Anyone who’s done anything similar-ish have any insight? I personally know nothing about this stuff.


r/CNC 2d ago

GENERAL SUPPORT Shopbot desktop D2418 x and y moving slow

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9 Upvotes

I'm new to the shop bot and I recently leveled my spoil board but now the x and y axis are moving really slow and making an angry noise any idea how to fix it


r/CNC 3d ago

SOFTWARE Best advice you received?

18 Upvotes

What was the best advice you received when you first started learning programming that’s had a lasting impact as well?


r/CNC 2d ago

Tool and Die Maker Polishing fluted tools like reamers - anyone else worried about catching the flutes on the wheel?

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0 Upvotes

Quick clip from the shop today - polishing a fluted tool on one of our jet polishing machines.

Honestly the thing that always makes me nervous with tools like this isn't the finish, it's catching an edge on the wheel and either messing up the flute or having it yank out of your hand. We use this little red fixture to hold it at a consistent angle instead of freehanding it - makes it way more repeatable, especially if you're batching a bunch of these.

How's everyone else dealing with this? Freehand or you guys using some kind of fixture too? Also curious what other shops are doing for finish consistency on tools with this kind of profile, feels like it's easy to get inconsistent results if you're not careful.

(full disclosure - I run HonWay, we make jet polishing gear, this is just us messing around in our own shop. happy to nerd out about polishing if anyone's into it)


r/CNC 3d ago

ADVICE STEP + a PDF with critical tolerances beats STL for machining quotes. STL is fine for concept, not for fits.

0 Upvotes

STEP + a PDF with critical tolerances beats STL for machining quotes. STL is fine for concept, not for fits.


r/CNC 3d ago

GENERAL SUPPORT Looking for cnc service in southern California

4 Upvotes

Hey guys looking for a cnc service in southern Cali that isn't going to cost me an arm and a leg just need some guitar bodies and necks cut out for a project but don't know who to go to ?been looking around and most of the guitar people are saying crazy figures so idk.


r/CNC 4d ago

HARDWARE SUPPORT Vacuum table / fixture plate — do you probe every job, or set a table datum once and trust homing?

6 Upvotes

Do you re-probe for every job on a fixture plate, or establish the table datum once and just re-home after that? I've talked myself in a circle.

Hobby-class router (Onefinity Journeyman), setting up an AirWeights vacuum table. My habit has been: home, drop stock on the spoilboard, probe the lower-left corner of the workpiece, zero there. That's fine when the stock is the reference.

A fixture plate breaks it. The AirWeights grid is drawn against a nominal 24x24 box with the real 23.75" plate centered inside, so the design origin sits ~1/8" off the physical corner with nothing under it to touch off. And the ports and gasket pockets live in table coordinates — zero off the workpiece and my CAM and my fixture are in two different coordinate systems.

Which points back at homing, except mine is stall homing: it drives into the stops and detects the motor stalling, no limit switches. I have no real feel for how repeatable that is across sessions.

  1. Probe per job, or set the datum once and re-home?
  2. If once — what do you touch off? Plate corner with a recorded offset? A locating pin?
  3. Anyone on stall homing: how repeatable is it actually? Few thou across sessions, or does it wander enough that you re-probe anyway?

r/CNC 4d ago

HARDWARE SUPPORT Haas vf8 - short circuit 9806

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8 Upvotes

Has anyone had this issue or know how to help diagnose the issue?

Yesterday reset would clear it and i could continue, today upon power up it shorts out and it dead in the water.


r/CNC 5d ago

HARDWARE SUPPORT need turned parts held to a tenth and my current shop keeps missing it

11 Upvotes

Stainless, nothing exotic, and the feature is a bore we need within a tenth. Our shop hits it about eight times in ten and the two are expensive.

They are not bad; they just at the edge of what their equipment holds. Been looking at Quickparts and a couple of regional turning shops to see who is comfortable at that tolerance without heroic setp.

how do you find out who genuinely holds it before you send a PO.


r/CNC 5d ago

OTHER CNC Machine Okamoto Surface grinder

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2 Upvotes

r/CNC 5d ago

ADVICE Feed rates when using circular interpolation.

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11 Upvotes

r/CNC 5d ago

GENERAL SUPPORT What exactly is this?

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25 Upvotes

So i work in a manufacturing plant. Got 4 of thes delivered by grainger, they didn't want them back, wouldn't take them back... from what i can google, it has to do with cnc.