Smitty's RV-9A from Van's Aircraft

RV-9A: Project Entry

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Final drilled the gas cap flange
I final drilled the T-406B fuel cap flange, using the cap in the cap flange as a guide for centering the flange in the tank skin opening. The cap flange has two slight bends in it to help it to conform to the curve of the tank skin. I drew lines on the flange with a sharpie to help me make sure that the bends were in the right position for drilling. I marked one hole with a fine point sharpie, using the skin as a guide. then I removed the flange and used my spring loaded punch to put a small dent in the flange so my drill wouldn't wander. After drilling this first hole, I cleocoed the flange back onto the skin and drilled the rest of the holes.

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