Just to add some info, your increment of motion (one step) is .00327...so you cannot be more accurate than that. But more important are:
1. Backlash or lost motion
2. Springiness- deflection under load
3. Squareness of your system - don't want to make parallelograms
4. Straightness of BOTH axes
5. Perpendicularity of your Z axis to the other two
6. Following error of your servo system
7. Absolute accuracy of the computations from the CNC
Jack C. |