I have a wing build system that I have used successfully for several years. Its not quite a Lincoln log wing, but similar, and better I think. The wing is built on 1x2’s with the leading and trailing edges projected over the 1x2. The wing parts are all indexed with notches that make the alignment of parts automatic, no need to build over plans. The wing is sturdy with L beam spars capped with 1/16x1/4 spruce. The airfoil is excellent and produces the best hourglass 3rd corner ever done. I have .dxf files if you wish to cut your own. Email me too large to publish here.