Thanks, Steve. I had tried the exact same setup you used but with the C-Frame but I think there was too much play or a bit of bouncing between strokes of the gun which produced undesirable "cratering" of the piece on the shop side. It was still "airworthy" by my estimation, but not what I'm used to. I drilled out the rivets and ordered new parts (had to call Van's and plead my case because they're listed on the site as being on backorder). With new parts in hand, I decided to firmly clamp the rib to a work bench with its end sticking just enough beyond the edge to buck the rivets with my 3x gun and tungsten bar. Worked well. No cratering.Hi Mike have a peep at my blog here for some more pictures which may help …
14-06 Flap Hinge & Torque Tube
<p>Flap Hinge Brackets After the marathon priming job, it was nice to start assembling the parts. I decided to try out the C-Frame back-riveting technique to set the 470AD4 rivets attaching the Flap Hinge Brackets to the ribs. It worked pretty well, but I found that ensuring the workpiece was...vansrv14project.uk