Setting up stepper motor drivers

[croy]

Hi Jazzcnc, going on the figures you worked out would i then be correct in surmising that my potential accuracy for turning can be 0.005mm

Accuracy = Pitch/Steps per

Well there's your problem then.

If 1600 micro steps and 4mm pitch with 20T on motor and 40T screw then try 800 in steps per. So formule (micro steps/pitch) * (screw pulley/motor pulley)