Ribs and sheeting are 1/16" contest balsa. TE is 1/4" square balsa and leading edge is carved from 1/2" x 1" contest balsa. The spars are full length 1/4" spruce, one piece wing tip to wing tip. Center bay has two 1/32" ply shear webs. The next two bays on each side have one 1/32" ply shear web and 1/16" balsa webs out from there. Finished it measures exactly 11.5% thickness.

Wing tips go on tonight.

Dave