Wow, I hadn't checked out these thread in a while. Lots of good stuff. Keep them coming.
My version of the Royal chuck stops. Cut out of 6061 1/2" x 6" plate. Spaced out from the chuck face with SPACE BLOCKS.
Edit: I've faced them. Hopefully they won't warp as thin as I got them in some spots. I'll just have to keep an eye on them.