I am currently building a 1/5 Gee Bee Sportster using old school methods with a foam core wing. This is my fourth but most challenging wing to date. I am pleased to say that so far, this cutting method I've used worked out very well. I am sure there R many cutters out there & many more who R interested in doing the same. So I am hoping by posting this thread, others will weigh in with their experiences as well. First, I would like to describe the equipment that I am using & how I would rate them. Being new to this process, all I can say, is, that I am very satisfied as to how these cutters work. The first is my table cutter that I bought from EBay. I cannot remember the exact listing I bought this from, but this one has the same specs as mine. https://www.ebay.com/itm/143610667439?hash=item216fdce1af:g:PWkAAOSwDkVaD1Ie The bow cutter I built using instructions & parts from Jacobs Online. I have it set up to operate a 30" & an 18" bow. I have nothing to compare it to, but I just think that this one is the bee's knee's of amateur cutters. Here is the videoThe next set of photos R my first 3 attempts of cutting out foam wings The first 2 R small 24" WS and the last one was 54". For the racer and the pattern plane, pink foam was used. The F5 propjet is Hobby Lobby craft foam. The racer had a wide balsa strips glued to the LE & TE with thin strips in between to simulate ribs. Microlite covering & WB paint for the yellow is what finished it off. This is the method I am going to use on the Gee Bee adapted for a larger scale. The F5 is fully sheeted & the pattern plane is WB topcoat fibereglass over pink foam with WB paint. These wings were fairly easy after a some trial & error. Straight lines for the LE & TE, rib patterns pinned to the sides, & follow through with the bow. The Gee Bee has semi elliptical rounded wing tips. I did this one by dividing the wing into 3 sections. The straight LE & TE as one, & then I did the tips into 2 & made the curves into straight lines for the hot wire cutting. I then taped the sections together & cut the curves back into the wing with an Exacto Long carving blade. U can see how well the sections lined up & the symmetrical step down from the different size ribs to the tips. I hope that @wilmracer has some his experiences to share. He is doing a giant 1/9th B-17. He did his wings using a box method that is just beyond amazing.