There are a plethora of well constructed, in-depth how-tos out there on the web. I checked most of them out to get my head around the construction, then made this design on the basis of not having access to a lathe. Ordinary drill for the most part.
A piece of copper tube for the center, and quick-grown fir for the rest. Aiming at zero budget. Old drawer knobs at the ends.
If anyone's interested, I'll share how it's made.