/r/CNC

Photograph via snooOG

For anything CNC related: CAD, CAM, automation, and more!

Rules for posting:

1. Safety

No posts or comments that encourages unsafe acts. Examples of this include unsafe instructions and unsafe modes of machine operation.

2. Asking For Help

You must include as much useful information as possible when asking for help or advice. This is now required. Any posts without this information may be removed and only restored when the information is supplemented. Post authors are required to stay engaged with the community.

Posters are also expected to have done some basic research on their own. If it appears the author has done little or no research it may be removed for low effort.

3. Be Respectful

Please be respectful of others when posting. Name calling or belittling will not be tolerated and may result in a permanent ban.

4. Off Topic

Off topic posts are not permitted. Posts must be directly related to CNC

5. Self Promotion

Posts of self promotion MUST include original content directly from the post author and have been created with reasonable effort. Posts that do not meet this criteria will be removed without question. Other considerations that may cause the removal of the post including lack of engagement with the community or the author has a history of self promotion. Final decision is made by the community by way of reporting.

6. Sales or Quoting

Sales and or services posts are not permitted. This includes sales items and quoting. Please use the stickied sales and services megathread.

7. Low Effort Posts

Titles must be clear and descriptive. Posts that are too vague may be removed. Memes are not permitted, unless they are CNC related AND funny. Meme posts that are not funny may result in a permanent ban and possible curse to post author.

8. Piracy

Piracy of any kind is not permitted and may cause a permanent ban

Other subreddits you may be interested in:

/r/CNC

89,017 Subscribers

1

Redfox2

Busco gente que tenga o que haya tenido experiencia con la RedFox 2 de nomadtech

0 Comments
2025/02/02
08:13 UTC

1

ERP focused on Manufactoring with many details

If there is any machine shop owner or worker who wants an ERP that is focused mainly on manufacturing rather than anything else. I've started a project for my client and just had a thought if they want probably more people wants to have this kind of software for tracking and analyzing everything around the manufacturing, machines etc. For a reasonably cheap prices ofc like 50 buck a month

2 Comments
2025/02/01
22:52 UTC

2

Spinner CNC has non collapsible way covers on their machines. Do anybody know how it works?

While researching 3-axis mills, I came across an interesting way cover design from Spinner. I'm trying to understand how the table attaches to the linear way trucks without interfering with the cover. The only possibility I see is that it wraps around the way covers. Has anyone seen a similar setup or know how this works? I've linked some videos for reference.

https://youtu.be/W4Japks0V9o?si=Rp4aVRJaW2hJlgPm&t=46

https://youtu.be/t6Ytu5lxQKU?si=Rw4HB7NtnbbF5j5B&t=468

https://preview.redd.it/ffk4wqleqkge1.jpg?width=1466&format=pjpg&auto=webp&s=dc1bdc9af93d1e684ec7fcb0c172f20119bb7a5c

Update: We have a consensus, the table wraps around the cover. I asked on the machinist forums and someone posted the patent.

https://patentimages.storage.googleapis.com/15/d6/2b/3ce7a120b8ec8d/US20160333928A1.pdf

18 Comments
2025/02/01
18:54 UTC

3

Running in low temps… Grease?

I live in Oregon an have been getting temps dipping down into the 20’s during the night. It is taking along time to warm up. I have noticed my ShopSabre 4896 shuttering which is causing it to loose track of where it is on the gantry (x,y axis).

My first thought is that the grease is to cold and not allowing for it to easily move. Is there a low temp grease that might help solve this issue?

Thanks, Brian

9 Comments
2025/02/01
15:06 UTC

0

Remove knob from middle hole area

I have a weird question - when milling on our 3 axis cnc, and making an hole inside the part, lets say a triangle hole in the middle on the sheet, it does all the miling just fine but leabes a little knob on the part that will be thrown out - the traingolar part that was removed... i know it doesn't change the real parts function or anything like that but I just want a perfect traingle from the extra material the goes to waste..

We are using fusion360 as our CAM software and yes the knob shows up in the simulate option in fusion

10 Comments
2025/02/01
10:50 UTC

0

What CNC to buy for making toys?

I am looking for a 4-axis CNC machine under 1000usd to make some toys and unique chess figures. What should I get? The size does not have to be too big.

I have seen some options from snapmaker, but I am looking for more variants.

5 Comments
2025/02/01
06:46 UTC

1

Looking for appraisal guidance

We have a 2012 SCM Sigma Impact 107 Beam Saw (not a cnc, but it is adjacent machinery) looking to auction it off. Any ideas how I can gauge the thing’s value myself before auction companies tell me what they think it’s worth?

0 Comments
2025/01/31
19:55 UTC

9

Mastercam->GibbsCam transition

I just had a very big job interview for an R&D machinist position that I believe went pretty well. The only thing that they seemed hesitant about was that I have used Mastercam for 25 years and never used GibbsCam, which is what they use.

I know that almost all CAM software can achieve the same thing, just have to learn their naming and where the buttons are.

Has anyone switched from Mastercam to GibbsCam? If so, was it difficult to get up to speed?

9 Comments
2025/01/31
19:44 UTC

1

Interpolation turning / orbit machining

Hi,

have you heard of interpolation turning (orbit machining)?

Does anyone have any experience with this machining method on Sinumerik?

How is the accuracy of machining holes / planes compared to e.g. milling as shown in the video below during machining of the valve plane?

https://www.youtube.com/watch?v=TSy9W4r6mpc&ab_channel=MONTING-SK

https://www.youtube.com/watch?v=WXTyAG7hBVA&ab_channel=TTL-AdaptiveTechnologyExperts

8 Comments
2025/01/31
17:35 UTC

1

Filling Spoilboard

Does anyone fill the areas where the spoilboard was cut too deep?

Somebody forgot to zero the Z axis (I'd never do that myself) and the bit cut a few MM deeper than it should. This has happened several times. I know I could fill those areas with some sort of wood filler, but is that actually a good idea?

1 Comment
2025/01/31
16:27 UTC

0

Wood herb grinder?

Has anyone successfully designed one for wood? I’ve looked up and down for a file to buy but nothing. I’ve tried designing one but it hasn’t come out correct.

Any help is appreciated. I’m doing a 420 fest and wanted to include some with rolling trays and stash boxes.

6 Comments
2025/01/31
16:18 UTC

0

Safety concern

I work as a CnC machinist, where I cut steel, not plastic. There are metal chips everywhere and I do a good job at staying clean for the most part. I've been in this job for about 6 or 7 years. Recently I've been having a lot of anxiety about potentially getting s piece of metal in my mouth and swallowing it. I realize if it's a small enough piece it will not hurt me. Sometimes we have longer, more needle like chips though.

Any help on how to remove or lessen this fear of mine?

10 Comments
2025/01/31
16:08 UTC

3

Shopping for a machine to cut half inch metal

I work at a scenic fab shop and we outsource a fair bit of metal cutting to a local water jet.

We are considering buying our own machine to keep in in house and expand our capabilities.

I feel like water is not ideal for us. I am thinking a laser is going to be our best bet but that is why I'm here. I have read that plasma is an option as well. trying to find the best fit.

I think I read that we will need at least a 2kw laser for half inch. Half would be fairly rare most commonly 1/8in or 1/4in.

Who are the brands we should look at who should we avoid, what are some of the other costs associated with the laser that we need to consider.

We already have 2 cnc routers so we have a pretty beefy compressor and dryer in the shop. I'd have to check the specs to see the capacity of the compressor we have.

33 Comments
2025/01/31
15:29 UTC

0

cnc

how much to cut 3/4 plywood on the cnc 4ft letters only?

4 Comments
2025/01/31
13:09 UTC

3

Link motions during 3+2

I am programming a part for doing finishing operation using 3+2 milling or positional milling. I am confused how to setup link motions for a given position and between positions.

Is it desirable to have simultaneous rotation along B and C axis during this link (non-cutting motion) while machining a given region along a fixed tool axis positio? What could be the consequence? Does anyone have experience in machining parts using 3+2 and setting up effective links between different region..it would be helpful to share your thoughts

4 Comments
2025/01/31
12:29 UTC

1

Help with FastCam/FastNest app

Hello everyone.

I draw my cutting files with AutoCAD, then I open the DWG file in the FastNest to generate the CNC file and then proceed to cut it in the CNC machine.

I was wondering how can I make marking lines? For example if I want to bend a plate in a certain line, how can I make this line without the CNC cutting it through?

1 Comment
2025/01/31
11:52 UTC

0

when I make any model when I let the left and right sides of the router go to the finish, the maximum goes in, no matter how thick the material is. what is the problem

2 Comments
2025/01/31
11:30 UTC

1

Fanuc G10XX cycles don't work

Hi, i have an issue with machining cycles/g code guidance. Controller is MXP-300FB iHMI.

Basically any cycle made with this function: lets say pattern drilling does not work. There is no error it just freezes on the cycle line with spindle running...

Both in simulation and real life. G98 works though o.O I kinda feel the problem is actually with the "pattern" part of code - G1215

Send help!

Sample program: G90 G17; G54; G40 G80 G49 G90 G95; M1; T4 M06; G90 D4;

G43 H4 Z100; S1200 M3; G0 X0 Y0 Z30;

G1001 W1. I3. L-10. K0. C10. F0.3 Z2.; G1215 B30. H0. V0. R50. A0. C8.;

G0 Z200; M30; %

4 Comments
2025/01/31
10:50 UTC

2

cmz lathe jaws make weird noise when opening pls help

https://imgur.com/a/ChwsTiU i wish somebody could tell me the reason and maybe the solution thx

1 Comment
2025/01/31
07:46 UTC

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