I filed the landing light opening to smooth the edges left from drilling the small holes. Next, I sanded the edges and used a bit of scotch brite to clean things up. I also used my soldering iron to trim the protective coating on the outside of the wing skin. Since I needed to open up the wing tip I needed to complete the holes in the inboard filler strip. I up drilled the pilot holes to #20.
Welcome to my builders log for Sonex S/N 767. It won't be as big as a real 767 but if you scale the speed I bet it will be almost as fast
Dave's Sonex Builders Log 