New to CNCing and trying to carve a threaded wasteboard. I managed to get the holes drilled through, but the recesses for the threaded inserts are not lining up properly. The initial recess centers perfectly on the first hole, but about every third recess, the CNC is having a small “bump” at the top of the outer ring of the recess and throwing the alignment off by about 1/8", so as it goes along, each line of recesses is carving further and further off from where it should be.
I ran a juice groove carve as a test and it worked fine. I have also lubricated the drive bolts and rails. Anyone know what could be causing the issue?