I thought some of you might be interested in seeing a couple pics of the two molds I just finished. These are for an instrument I'm designing that will exist somewhere in the realm between guitars, mandos, ukes, and bouzoukis. 4 double courses (unisons) tuned GCEA, like the top four strings of a guitar with a capo on the 5th fret. It's going to have an elevated fretboard with a "negative" neck angle and an adjustable neck. The body is 12" wide by about 15" long.
I'm planning to build two at the same time (one for my wife's 50th birthday, and one for sale). As I was thinking about making two molds, an idea occurred to me. Thinking ahead to clamping the neck block, tail block, and sections of side lamination (partly because I plan to put in a rather large side sound port), I thought it would be great if I could put the body in a mold that is at least the full height of the sides. That way, the mold makes a perfect full height outer clamping caul. So, I made two molds and used some aluminum rod I had to pin the two molds together in perfect alignment for those clamping steps. If I haven't explained that clearly, let me know and I'll try again. Here's the pics:

