I just used some scrap 3/4 that seemed to turn and thread real nice,I didn't harden it, the old one wasn't hardened ,all parts were turned on my 1946 South Bend 10lNice single pointing.
What steel did you use for the new screw? And did you harden is at all.
Cheers Phil
Good thing my wife isn't around to comment on it. "The new handle/screw looks very nice but now the vise looks kind of grungy. Don't you think you should fix it up too?" That's how the remodeling of our house got started. :banghead: :rofl: Nice job btw!-Ron