This is basically just two circles (top circle 10” in diameter and bottom circle 8.5” in diameter) held together with the “revolving” hardware. Both circles were made from 5/8” poplar and were cut into circles using my circle-cutting jig and my band saw. I used my router table to profile the edges of the circles. The top circle has a Roman ogee profile on the top, and a rounded-over edge on the bottom. The bottom circle just has a rounded- over edge along both faces.
The piece was finished (before assembly, of course) using a spray-on, Red Oak stain. Then, after a light sanding, I added one coat of a clear polyurethane protective finish.