Thanks Mike.
I'm trying to get primer on this weekend but I have my doubts. Getting the head back in shape has been rough. It was in bad, bad shape. Small update. The back panel of the head is made of pressed board and is swollen and warped in places. I first lightweight filled the major areas and then sanded and leveled. After that I skimmed the whole thing with glazing putty. IMG_2891 (resized).JPG
After block sanding the glazing putty, you're left with this. The spots of red are filler in the porous areas of the pressed board and over all low spots. IMG_2892 (resized).JPG
A couple thoughts. I'm still impressed with my choice to go with a new filler as opposed to using bondo. With bondo, I was constantly fighting gummed up sandpaper. Now I don't replace sand paper unless it's worn. No gumming. It makes up its cost alone in wasted sand paper. Curing times are still consistent it still applies buttery smooth.
The other thought is how did I live so long without a good quality air powered sander. On all my other restorations, I used an electric orbital sander. They're heavy, loud and difficult to adjust the speed on the fly. With an air powered sander, I can feather the speed with the air paddle or permantly throttle it with the regulator on the side of the sander. It makes feathering seem almost too easy. I don't know how got along without it.
Fingers crossed I get into primer today...