Here is one of my bigger FW 190 D9 foamy wings Hot wire cut with 3/32 balsa covering. 92 in. wingspan. One of the nicer things with the foamy is, you can try stuff you wouldn't dare try with a built up jobby. Buddy and I were flying the 40 in.WS Flash 3D doing combat. Had a headonner and knocked the motors off both of them. They were about 10 ft. away from the planes. My prop was stuck in the side of his fuse. Hot glued the firewalls back on and we were back in the air in 15 mins and going at it again. The little bipe is made from $ store foam. 30 in span and weighs 6.7 oz without batt.