i have also found out that a edge of laminated balsa is very strong and very light. it also holds its shape much better then the reed that proctor uses. i usally use 3 sometimes 4 layers of 1/16th balsa to make them. i use a series of nails to wrap the layers around and to hold until the glue dries. you wouldnt beleave the shapes possible doing this. if its a very tight corner i will soak with some ammonia for a bit then put in place, let it dry then add the glue. thin ca wicks in quite well.