Flaps
I formed the rivet head to conform to the radius. I inserted the rivet then used a small brass tube to tap on the rivet head. The heads conformed pretty well. I don't think it makes any difference structurally, but the rivets looked better.
I can't remember whether I used a steel angle with a hole drilled near the radius or used the flap.
While I don't usually condone the use of a bigger hammer, it worked pretty well in this case.
Good luck.
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Robert Williams
Lee's Summit, MO
RV-8 - Empennage & Wings Done
Working on Fuse
O-360-A1A
1946 Cessna 120
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