Laser Rotary Attachment

Rim-Drive Rotary Attachment for engraving cylinder items with your laser. Wine bottles ,glasses, mugs, with easily adjust length and height.
Motor nema17 0.9 degree 400step/rev with this setup provides hardware resolution 0.1mm per step . However stepper driver in my laser machine is set to x8 (Microstep) so that the resulting max resolution of 0.0125mm per step. Used 2GT pulley 16 teeth of aluminum that goes over the belt on gear with 50 teeth (cuted on acrylic with laser) . Belt is 280mm in length and 6 mm width.

ver04.02 from 20/12/2018 , there was a difference between the layers, edited and uploaded the corrected version.