with wood my MPCNC works fine. Now I wanted to mill a custom pcb plate.
After some time the graver goes deeper and deeper into the pcb.
I can’t say for sure that Z-axis is “loosing steps” because it’s just graving (0,1mm deep), so there should be no z-movement.
Graving on wood is fine, as you see on the picture.
This is how it should look like:
Here you see that after some movement (graving goes from bottom to top) it’s getting deeper and deeper.
What is wrong, what can I do?
- Stepper current should be right, as I have no problems, also not with hard wood
- copper plate is even, i checked z=0 on all edges