Originally Posted by Stupot46
Neat.Just put one inside the other and mark over.Locating plastic cups without any "ribbing" could be a problem,I'll have to see what I can find,something I could tinker with in a quiet moment.
One alternative I've started playing with is tracing paper. It's actually lighter than the plastic cup. And with the camber is fairly stiff. But it needs some balsa spars to prevent it from bending under load.