That looks beautiful, but it's way overkill for my purposes... and my goal is to build an airplane, not shop tools. I think the simple one in the link I posted (direct link here) or something similar will be more than adequate for my needs. And who knows? At this point I'm just doing the design, and verifying that I can build anything I design. Actual construction is still a few years away. I may well ask a friend in a local sheet metal shop for a favor, but I don't want to design anything I can't build in y own shop. -Dana The first rule of intelligent tinkering is to save all the parts.