Mini update, really. After tooling up the lathe a little more and getting some more practice in, I've made a first set of jaws. I ended up making several of the male side first, getting quite a bit more efficient, but until today I didn't have a tailstock chuck for the center-drilling.

They're not the work of a pro, and the dimensions may need to be tweaked, but I think they might be serviceable.

Next up, unbox and set up the MIG welder I bought a while back