Discovered my stepper motors needed calibration, so I have been getting them zeroed in per the thread on calibrating the steppers.
Ran a test carve afterwords and still was having issues - so I retested my calibration and it was off again. Re-calibrated again and still having dimensional issues. I re-re-tested the steps/mm today and it is dead nuts on in all 3 axis. test carve STILL is not accurate to my liking.
W correct steps/mm, tight belts, v-wheels, x&z stiffening mods I am consistently having X dimensions come out .025-.030in UNDERSIZE. Y dimensions are consistantly coming out .015 in UNDERSIZE. Circles are still not as round as I would like - and consistently coming out .030 UNDERSIZE.
I could understand things coming out OVERSIZE due to runout of the spindle or overall looseness but UNDERSIZE? I have no idea. my edges are all crisp, no shoulders or lost steps during test carves.
Anybody have thoughts on what could be the problem here?