I've been wanting to build my own CNC for a few years now, and I've slowly begun to collect parts.
I just got these ball screws:
They are 1/2" per turn, about 26" long. Problem is, the encoders are coupled to the ball screw and only 250PPR. So the best case I can do is 0.0005" if I sample the encoders at 4X.
Will my actual resolution be anywhere close to 0.0005"?