Thread: Lathe

Drive pins on mine are definitely not hollow for what it's worth- I just checked. Mimms - min speed without backgear is 210rpm. Not saying it can't be done, but I appreciate the backgear on mine when threading to a shoulder! Also nice to drop the speed when parting tough material sometimes.

Edit: I should say not hollow on the front face. They may have blind hole in the back where the compression spring sits - I can't remember without pulling them out.