TomD
Pretty much the only jig that jumps to mind is a shooting board, and even that is not a jig in some modes of use. I am pretty adamant about not making jigs mostly because I make so many different things that the jigs would take over the shop. I have made a ton of them for one thing or another. If I went back to production guitarmaking, I would make jigs and fixtures for every step, and on a slightly larger scale, I would make workstations for every step.