Got sidetracked from the bird project for a few months but I'm working on it again. The rear spoiler is roughed in and will get finish work done later while mounted to the car. I started working on the front bumper I'll be using. I want a bumper without the jack hole slots for a cleaner look.
Starting with a core I bought many years ago I soda blasted it to get off most of the old primer & paint that someone put on it. Then mounted it to my "whatdayacallit" body/paint contraption while bolted to a board to make it easy to work on. This way I can spin the bumper to work on top/bottom and the part doesn't keep flexing like they do when trying to work on regular bodywork stands.
There was a section that had lifted from the metal core which happens to many of the 70-73 bumpers. So I drilled holes in the affected area, scraped inside to loosen rust/dirt etc. and then blew out the junk with an air hose. Then pumped panel bond into the void through the holes and clamped overnight.
After the panel bond was dry I ground off the paint sticks and excess panel bond and used 3M flexible parts repair material to fill the voids and other bumps cuts etc. on the bumper.