I had already designed an alternate frame to support the CHESSmate should one not want to go the the extra work of printing the reproduction's case. Problem is I didn't like it and it wasn't growing on me. Too rushed, too clunky. So I took another run at it and this is what I came up with.

It's even more minimal and IMHO more ascetically pleasing.

I populated a second CHESSmate PCB and attached it to the new frame with eight M3 x 6 mm bolts and nuts.

This time I used bare buttons without the caps to accentuate the minimalist vibe. I'm much happier with this version.