Just had a bright idea (possibly?)

Was just looking at the consistancy of some foam I have a wing pinned on (differnt story wont get on that now).

The foam is a panel of "R" insulation...its a light foam but coated in a sort of saran wrapish stuff wich makes it really tough and springy. Each sheet of this stuff is about 3/4 of an inch thick and you can grab a 12' by 6' sheet for 8 bucks.

So I was wondering, how about glueing 6 or 7 of these sheets together and carving the fusalage and wing from it? Then reinforcing them with carbon fiber rods and fiberglass (I would still have a plywood firewall and similar bits). After all that sand it down smooth and cover it.