Question about new digital stepper controllers

[Jonathan]

Very true Jonathan, in a static situation where you are holding the work steady while cutting.

Fair enough, I thought the plan was to just index the cutter.

I've also converted a rotary table - vertex HV6 which has a 90:1 worm drive and 1Nm stepper. It works well for timing pulleys pulleys, but there is a bit of backlash. A harmonic drive would be ideal, although rather expensive.

Also if you've got a lathe it's not difficult to make wormwheels, here's one I made a few years ago:



This was the process: