Tom and Pottz, it’s just a scrap of maple with a hemispherical hole turned in the end of it. Think a jam-chuck, but for balls instead of bowls. In combination with the cupped live center that came with my Harbor Freight lathe, it’ll hold balls from about a half-inch up to 2-3 inches. If you stop and change the axis the ball is rotating on frequently, it’s not too hard to get round. And once you figure it out, there’s a lot of uses for them.

I’ll take a picture tomorrow.

May you have the day you deserve!