Over the course of the next several days, I hope to layup another P40 fuselage in the mould. This revision will incorporate a 1/4 inch ply firewall, and also a flange on the tail section to ease assembly for whomever should get their grubby little hands on it. lol
I'd like to end up with a sheet metal template for producing future firewalls as well.
I got these two sheets of ply for under $5 each at a local woodworking supply outlet. Oh yes, one sheet is 1/4" and the other is 1/8": both birch.