I started by getting the pilot holes layed out on the hinge. Next, I drilled the pilot holes in the hinge and then transferred the holes to the flap skin. The next step was to enlarge the holes to #30. Next time I\’ll take everything apart and start deburring.
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 