Friday, November 22, 2024
Well thar's yer problem - M3 thread
I was wondering why my probe failed to move when the thread rotated on the drive motor. Turns out there's an f*****g great dent in it! Looks like The Chosen Screw needs to be very, very carefully inspected before installation. This particular divot causes a 0.1mm deviation in the probe movement.
It also shows that the drive nut is making extremely limited contact with the thread. Maybe longer nuts will help? This is a good reason to use longer lever arms - slight variations in thread manufacture will have a less significant effect on probe movement.
