Hi,
yes, there is no 'cm' setting in Mach, what it means is your 'Steps per Unit' value in the motor tuning pages is out
by a factor of 10.
Try getting this info:
1) The lead screw pitch, needs to be accurate, 'about 1/4 per turn is NOT good enough, real accurate,from manufactuers
documentation preferred.
2) Belt or gear reduction ratio, if fitted, between the stepper and the lead screw.
3) Your microstep setting of your stepper drivers
4) I assume standard two phase stepper of 200 step per revolution?
Craig