I think I'm going to hold onto the 3 jaw for now. It's still got it's uses on the lathe.
As I mentioned before, a kind forum member had a backing plate that fits the lathe. I've now got the backing plate in the post, and got it fitted to the lathe!
This afternoon I fitted a 72-100 Toolmaster 4 jaw Independant chuck from H&F to the backing plate. I was eyeing off some of the chucks online, and realised that for about the same price as ordering one from china, and waiting who knows how long for it to arrive, I can order what appears to be the same chuck, for the same price, and have it in 2 days! So i'm pretty happy with that!
Attachment 378235
Here is the chuck fitted! I do need to turn the backing plate down to the diameter of the chuck.
And here is a WIP shot of the Steve's workshop engine I'm working on:
Attachment 378236
It's rough, but it's my first project, so I'm pretty happy with it!
Hopefully when I get the m2 tap, and screws to finish it, it'll even run on compressed air.