I’m still learning the machine and CNC in general, and I’m really having a lot of fun doing so. But with that comes some frustration when things don’t go as planned.
I tried to do a simple cut-out and slotting in some FR4 garolite material to do some fit-up testing of a circuit board. The material does not have any copper, it’s just the plastic laminate.
Looking at the slot in the picture, you can see that I do a plunge into the material, then move across the X-axis to create the slot. Then I move the Z back up to go onto the next slot.
All three slots have this weird characteristic where the Y shifts up a tiny little bit when I command the X to move. As soon as the X stops moving, then Y shifts back down.
G-code to cut one slot:
G0 X03.005 Y00.2
G1 X03.695 Y00.2
As you can see, I’m not commanding any Y movement, but it still shifts up and down slightly. I figure something is loose, but I’m not sure where to look.
I’m cutting a slot with a 1/16" bit that’s solid carbide with a diamond-pattern cutting edge. It has an end-mill end (McMaster PN: 8785A21).
I’m feeding at 60ipm with a Dewalt 611 on full power (6).