[MichaelHenry]

Same boat here. I have one for my Pulsar, but I've only tested it out. To do it again, I'd probably look at either a harmonic drive 4th axis or a fast unit like the Rapidturn. There was another option for something like the Rapidturn, but I can't remember the name...

Was that the InTurn by Steve Simpson? I don't think that he is actively marketing that any more. I have most of the parts for one but never got around to installing or testing it.

https://www.youtube.com/watch?v=Bz1JZBmBDnA

[burbingus]

Was that the InTurn by Steve Simpson? I don't think that he is actively marketing that any more. I have most of the parts for one but never got around to installing or testing it.

https://www.youtube.com/watch?v=Bz1JZBmBDnA

That's the one! I remember seeing it a year or two ago and being intrigued. I don't remember seeing any specifications about indexing resolution though.