Weld seams on quarter panels visible in hot sun, but not garage--how to remedy?

[PRRC]

Maybe not the same stuff your friend is using. I would doubt its rated at 800 degrees. Heat shrinking will help with distorted metal, But will not cure the expansion rate problem. We try and only use full panels if possible. We have a 69 Pontiac convertible that we are finishing up at our shop right now. It needed quarters, But no full quarters are available. So what we do is try and cut the panel as close to the top of the quarter as possible. never in the middle of the quarter. for the very reason of your post. cutting it up close will eliminate the expansion rate problem. because the seam at the top will not expand as quick as the rest of the quarter panel.