Well you saved me some time. The thin rail I was going to use was a 3/32" oak lath which would have flexed like crazy compared to your 6mm/1/4" acrylic which apparently already flexed too much.

I downloaded the .MPC files for your rotary jig Mark II but I see in some of the posts there is a Mark III. I did an extensive search and found some photos but never could find any .MPC files on that version. It looks radically different but that may be just the acrylic top. How much did the Mark II change to make the Mark III? If it is significant can you direct me to the mpc files? (assuming you posted them)

I bought your UCB project plans and will be going to Lowe's to pick up the hardware today. I will probably make the ACB version since I have plenty of knobs and threaded rod on hand from other projects.

Thanks.