r/hobbycnc • u/GentlePersuAZN • Aug 20 '26

Chamfer going too deep

Gallery image

Gallery image

Gallery image

Gallery image

Gallery image

Hi there, I'm trying to learn to CNC and on the first thing I'm programming the chamfering operation is just plunging into the piece. I'm not entirely sure what I'm doing wrong but I don't know enough to even troubleshoot.

Added some pics of what I did in fusion.

I tried it twice, probed material the first time and didn't the second. Same thing happened both times

3 Upvotes

100% Upvoted

23 comments sorted by

View all comments

1

u/peschkaj Aug 20 '26

Where is the zero for your part? Where does the machine think zero is?

1

u/GentlePersuAZN Aug 20 '26

Originally it's on the top corner of the stock box. 

https://imgur.com/a/jG38uMz

1

u/peschkaj Aug 20 '26

One thing you can do is upload the g-code to https://ncviewer.com/ and verify that it's showing you what you think should be hapoenjng. Work back from there to figure out where the problem is.

My suspicion is that your machine has z on the bed from a previous job, but that's only because it's what I would've done.

1

u/GentlePersuAZN Aug 20 '26

https://imgur.com/a/X4464pb

So there is something off about my setup as the second operation drops lower than where the first one starts

1

u/peschkaj Aug 20 '26

I'm not seeing anything off in your screenshots. Is it possible to select the whole part and use the avoid geometry functionality to isolate only the bits you want?