Hi,
additionally I notice you are using incremental moves. What is your step per unit vale for the Z axis?
Craig
JoeAverage,
My single motor movement is 0.0001 inch on all axis. That is the best I can get out of this machine and seems good enough for the parts I make.
I compromised on the calibration of my Z axis. Going up can be 0.0003 different than doing down as long as the down direction is < 0.0002. All axis are not calibrated to less than 1/5 of by 0.0005 dial. 1 inch or 0.015 inch, the return is to zero.
The up direction has to move the weight of the head, spindle, motor, Collette and bit so I see how it would put a lot of stress on parts that would not have the same stress in down direction. I do not have a zero weight Head.
Thanks, all how commented.
p.s. my machine is slow for a CNC. In the next week, I'll turn up the acceleration.