Jig for holding cylinders to be drilled

[catsittingstill]

For my canoes I like to include through-holes as a means of fastening the boat. This means I need to make cylinders of wood (brass is heavy, plastic doesn't look right) and then drill out the centers to make pipes of wood. Holding a cylinder to drill the center out is kind of difficult; this is what I use to do that.



And here it is in use:


Well, sort of in use, since I frequently end up clamping it to the drill press fence, and I didn't show that. But hopefully this gets the idea across.