Very nice work !! Thanks for the pics . Have also done a lot of scratch building ( for the past 30 years ) and doing it very much the same way . Roly and myself were discussing the reason for the ply on the back of the wingtip ....something I don't do on a patternship. Do you do this to strengthen the tip ? One of my friends does the same on his pylon racers where the L/E tappers down to a very thin edge

Brgds
Juan