Firewall takes final shape

Tonight I was able to get most of the firewall riveted together.  I used a back-riveting technique and it worked wonderfully!  The results are a nice smooth forward surface.  See for yourself.

Nice smooth forward firewall surface.

Aft side of the firewall.  Shop heads on the rivets come out so nice when back-riveting.  All that's left are a couple of brackets, aux fuel pump bracket and the brake cylinder bracket.