Checked Firewall templates I made to create my mockup, the "Chipboard Cozy", all OK.
Used 6mm MDF vice plans fir ply as recommended by Drew Chaplin. Marked up and cut with jigsaw
Used 1/4" Marine grade hoop pine ply for the permanent firewall, marked up and cut with jigsaw. First attempt at upper was a bit flat on top. Redid. Still got lots left over. Lower firewall has NACA marked but not cut while I ponder updraft/downdraft.
Permanent firewall has screw positions marked but not drilled, using clickbonds which go on the surface.
Decided not to do any more until Aircraft Spruce order made. Took a while...
