Galvanized pipe was put in place in the leading edge skin. All the holes were drilled to #30. In order to dimple these holes you have to get creative since the normal female die will not fit in the curve. So to solve this the pipe was countersunk as per plans, placed back into the skin and clecoed. Using the “bumper” I made previously for the close quarters dimpling and the pipe as the female die. This worked extremely well and I was very happy with the results.
The pipe was removed, scuffed inside and out. The inside was scuffed with a rifle cleaning rod that had both sand paper and scotch bright installed in it then chucked in a drill. This worked great. The pipe was then cleaned and primed with rustoleum bright yellow. Color was just for the fun of it.