Re: CNC division

I'd have thought that using any ratio of wormwheel and / or pulleys
that will divide up cleanly into 360 should be a good start, so that
a specified number of steps will give you exactly one whole degree.
I'm testing a 120 tooth wormwheel with a 200 step motor to turn a
Taig headstock and driving that via the Z axis from Master5CNC, which
seems to give good results. 72 and 90 tooth wormwheels seem to be
quite common as well.
I am quite new to this side of it, so if you find a definitive answer
as to best practice, please do pass it on.

Do you know what happens in the A axis when you go beyond 360
degrees ? Does the work rotate back to the start or take the shortest
route "through" the 360 mark ? In using the Z axis for my machine I
had to work out a way for the software to keep track of the number of
revolutions it was on and add 360 per revolution while taking the
shortest route between points. Is there a better approach ?

Rab