I've played pool for many decades, but know little to none about cue construction, and what you said hereI have had many shafts re shafted by cutting it down to a workable 5 or 6 inch shaft then machining at the top of the ring inward and turning a tenon that was then glued in to a new shaft turned down to match the ring diameter and they have all turned out fantastic.
sounds like greek to me.

I'm just looking for someone to repair a used shaft (ferrule), and possibly make a new one (or two). With one
for 3c, and maybe one for snooker or possible kielwood. No well known cue makers here in AZ anymore that I have heard of. Maybe
rings aren't that hard to make.... but with 3 old shafts sitting around I just thought it was worth checking into.