As I launch into a more welding-focused phase of my build, at least temporarily, I find myself looking for jigging ideas. I know the basic idea: hold the to-be-welded pieces solidly so they can't wander around during welding. But turning that into a good jig is a skill I'm working on, so I'd love to see what you've done, and how it worked for you. I'm starting out on little brackets, but I'm interested in anything from brackets to rudder pedals to engine mounts to fuselage sections. What have you got to show off?