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

RV-9A: Project Entry

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Cut the hole in the inboard rib for the access plate cover
I used the T-407 ring as a pattern to draw a circle on the rib with a blue sharpie. The instructions say to use a fly cutter for this large hole. My fly cutter needs a new blade, so I decided to use my Unibit in my drill press to start the holes around the outer edge of the hole. After making a complete circle of holes, I popped the center out and finished off the edge of the hole with my bench sander that has a narrow circular sandpaper belt.

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