I just mixed some Sig Balsa Dust with some medium CA glue and got a very strong filler for the trailing edge of `1/2 A PLANE. Problem, the two halves were not quite touching. There's a strong hard bond now. The only problem - it's hard to sand the left over.
I remember using this with epoxy 40 some years ago to strengthen stuff. I still have the same cardboard can of balsa dust.
Is anyone still using that stuff?