Hi rusty
I think the answer is yes. I'm getting ready to try the same thing.
I have a long ways to go, as I have to mount my stepper to the
rotary table that I have.
Rather than adding a lot of $$ or equipment I'm just going to start
out by unplugging one of my current axis and use it as a drive for my rotary.
If I have understood all that I have read the 4th axis / A will only do
degrees without a lot of configuration. I'm just going to do a new profile
and that way I can switch back and forth by simply unplugging my motors.
Here is a link to a discussion that has been a big help to me.
http://www.machsupport.com/forum/index.php/topic,5281.0.htmlKeep us posted at to your progress.
olf20