I'd like to make a wooden ring for someone and I'm not sure if this is feasible or not, has anyone done it? I've read that using PEG can help with movement problems for this sort of thing, but I'm already using dried wood, so is that necessary?

This would be a simple round ring, sized for the ring finger and probably made out of a 1"X1" slice of an ebony turning blank I have. I was thinking I would turn the outside on a pen mandrel on the lathe, slice off the portion I need for the ring, then screw it down onto a larger (clampable) piece of stock and cut around the screw with a plug cutter or small hole saw to make the inside hole, then smooth everything out by dremel or hand sanding.

I'm worried it's going to change shape and not fit the finger with humidity changes, or that it will split easily and not be worth the effort.

Thanks,
Andy