Since my shop is located at my mom's home and I was going to visit her today for Mother's Day anyhow, I worked on the little project for Ed's lathe a bit. The bronze nut has to be done first so I can cut the screw thread to fit snug. The 5/8-10 LH Acme tap I have is, thankfully, the only left hand Acme tap I own. It's the right one for his cross slide screw and nut assembly I'm making.

The only 660 bronze I have is a couple short pieces of 3" diameter, so I lopped off just over an inch of it on the bandsaw and carved it up to the block. Boring stuff, I know. It was an easy decision to turn the slug into mostly chips rather than try and cut it on the bandsaw any further. Here's the photos that speak for themselves.






I actually finished the milling and went on the drill the hole, chamfer and tap it. Unfortunately, I haven't got good pictures yet. I set it up and started slotting it, but decided it would be best to get the fit of the threads to the nut while it's still a solid. It is unlikely to spring open when the slot is cut, more likely collapse a little if at all. The 660 bronze is dimensionally stable.