I am building a treadle lathe, and am trying to figure out what to do about a drive spur. The driven shaft on the lathe will be 5/8", and ideally, I would like to thread it to accept any headstock accessories. I know I can get faceplates and chucks that fit a 5/8" thread, but can drive centers be purchased that are female-threaded rather than on a morse taper? A thread size of more than 5/8" would be fine because I can make an adapter.
I am kind of a newbie to the turning thing, so be kind.
-Jamey