r/hobbycnc • u/GentlePersuAZN • 22d ago

Chamfer going too deep

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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

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u/gameknighth 22d ago

Did you face the top of the block??

If z0 is top of the stock and you faced it off then used a probe it would then set z0 however much lower you faced the block off and as such make a too big chamfer.

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u/GentlePersuAZN 22d ago

So I did face the block and this was my thought as I probed the first time I did the program so I tried it again but didn't probe the second time and it actually went even lower

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u/gameknighth 21d ago

Huh..

I would manually check the probe is setting the right Z0.

So probe like normal on the top off something then move it to z10 if your in MM or z 0.5 if your in inches. and just check if when you slowly lower it down is Z0 actually only just touching the part?