I finished up the center webs today. I used a whole saw to cut out the 1-1/2" hole but I actually used a 1-1/4" hole saw then opened up the hole to 1-1/2" with a sanding drum in the drill press. I did not drill all of the pilot holes as I will wait until I create one of the other spar webs to use as a template
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 