RE: Peppermint Pattie buid
Wing:
I have made a classic balsa wing. I have used Profily to generate ribs. (10 equidistant ribs per wing half + one rib in the place of fuselage sides.)
I have respected original airfoil and shape of the wing.
Main spar is pine 3x8 mm and auxiliary spar is balsa 3x3 mm
The wing is going to be held by two dowels (4 mm diam.) and two nylon screws M4.
The dowels are held by leading / subleading edge and two pieces of balsa glued between ribs 1 and 2: