Riveting Vertical Stabilizer Spar

Here's the setup I used to rivet the main spar of the Vertical Stabilizer. The spar has a thick stiffener so it takes a bigger rivet. Part of the fun of building is "McGyvering" a tool to get the job done. It may be hard to see, but I've shimmed and taped spacers to my C-Frame to get the spar at the right height to use the rivet gun on the AN4704-7 rivets.