Hoping to get started today. Going to a friend's place. I have a trick or two up my sleeve for this project
My biggest decision is how to finish the bottom: I might cap it with a piece of antler, or I might just sand down to some type of metal cap.

I have a 26mm Maggard mixed knot (70:30 badger/boar) I will try to drill down to about 18 mm and then shim if needed.