Have just been pondering (once all the other projects are completed) creating an Alt-Az for a larger DIY refractor. I think 2 of these rotary tables would lend themselves to the job with the right steppers. They are using 90 turns of the handwheel to 1 rev of the table.
Has anyone tried these in the past?
Seems a cost effective type of thing.
https://vevor.com.au/collections/rot...illing-machine