ORIGINAL: Avaiojet
Glue the LE, TE, to the two ribs.
All the other ribs can be rectangles with no airfoil. They can actually be glued in place.
Get a long sanding bar and have to it.
The wing will be done before you can say 3D.
Oh my god! That is so simple its brilliant! (and I'm ashamed to admit that I'd never have thought of it in a million tries......)