Yup, that's the idea. The apex of the "diamond" may be bent straight down rather than at an angle, such that the wing can't slide off on its own regardless of outward force. The "latch" would need to be unlatched after the flying is done for the day. This is good
MattK
ORIGINAL: Xrod
OK, here's another: a piece of music wire shaped into an elongated diamond, say 1 1/2" long by 3/4", with the loose ends secured in the wing halves. Perhaps two of these per wing. The fuse would then have a hole about 3/16" or so, maybe reinforced with brass or nylon. The wing will then push fit into the holes and secure it. The diomond spring will be forced together to fit through the hole, then expand again to secure it. The strength would be controlled by the diameter of the wire.
Steve