I planned to get up early and go flying, but I got a somewhat late start. I took a short flight and then returned home to resume work on the firewall. I primed all of the non-stainless parts. I had just enough primer left for this so it's time to place another order with Aircraft Spruce. Construction of the firewall allows you to use a plethora of riveting techniques. I squeezed, back-riveted and shot/bucked all manner of rivets. Ginger came out to assist with shooting the last of the AN426AD4-9 rivets. I was getting a little tired. Glad to have this mini-milestone done.