(See part 1 for the beginning of the process) Yesterday, I set out to measure backlash in the Z axis of Beaver HDZero CNC. I concluded that it had about 15 microns (0.015mm, or roughly 0.0005”) of backlash in the Z axis. Today I’m going to measure the X and Y axes. They’re each a bit different: They use larger ballscrews than the Z axis (1610 vs 1605) with twice the pitch. That means that one turn of the stepper motor goes twice as far. A single step should be 12.5 microns, and the step...
