A friend of mine just got a "small SB lathe". He doens't know anything about it and neither do I since I've yet to go visit..pro'lly this weekend. So he's starting to ask me a skillion questions about lathes. I just refer him to SB's "HtRaL" and to this forum though he hasn't joined IIRC...don't know why either. But anyway he asked me about obtaining a chuck for it and what's needed to get the chuck working on the lathe. This got me thinking because down the road I'd maybe want to get a 4-jaw for my Heavy 10L. So in real beginner speak can someone advise what's needed and how to get the backplate mated with a chuck? Thanks.