Hi,
I own a Turnstyler Slide Bed Lathe and it has an unusual headstock spindle, it has no thread and has a hole right through the headstock to accommodate a threaded bar which can be attached to faceplates and a Oneway Stronghold chuck which has been modified in someway.
I have this idea that I could have a threaded spindle made which could fit onto the existing headstock spindle, it would need to be approx 100mm diameter with a circular recess with locating pin and threaded hole to take the threaded bar and obviously the threaded spindle that will hold modern chucks, etc.
My question is, what would be the best thread to use? How long should the threaded part be? Length of register beyond the thread?, etc.
I have tried to find these details on some larger lathes out there but can't find anything.
Kind regards
Rob