Denford Starturn Turret

[Leadhead]

My desire to do this manually is derived from a slow moving unit previously experienced on an Emco. I am grateful for the input and have on the current design file extended the mainshaft so that I can drive it at a later date if desired.
Just addressing tool height adjustment at the moment. Will post when completed.

[i2i]

you can get the ratchet/pawl method quite quick with a reasonable stepper, the slow ones use a dc motor/gearbox to rotate and are pretty slow.
With a stepper you can control exactly how far the changer turns and returns to lock, and of course the speed of the change.