RE: I'm making the Stinger again
Cutting the 1/64 ply slot in the balsa is easy as making the tool that does it. There are many ways, but one of the easiest way is to use 4 piece of 1/18 ply, 1 - #11 blade, and 2 - 4-40 bolts and nuts .... sandwich them together and cut the slot in a second ...
G