Ring making

[Redshed]

I've tried making a couple of rings but i've always found that keeping the inside nice while working on the outside is hard, does anyone have any recommendations on turning rings without a kit/core?

 

[Paul in OKC]

I have done a few without a core, What I usually do is drill, size and polish the id and od if the material is long enough, then part it off. I then turn a piece of wood and make a small 'stub' to lightly press fit the ring on to polish the cut off side. Sorry I have no pics at the moment.