Sorry to be slow responding. Nothing fancy, this is me remember, and it’s shaft has a flat spot to hold a set screw better. I see turners for rod building that are geared together and while I like the concept of getting more done at once I prefer being able to stop a rod,or disc, when it needs attention. Epoxy used in most of what we do except Uv resin has a generous work time but with many guides to meticulously coat I usually run out of time before I run out of epoxy. Adding heat gives some extra time but it is still limited. If I ever set up a multi item setup I would use more motors and switches to isolate them. Low amperage draw makes switching and power supply negligible. Now if I just had the space. Let us know what you come up with.