We tape off all the seams then paint strip before blasting. After most of the car was paint stripped we DA off the rest of the paint to the edges of the seams. We are not repainting these jams. only the bottom sill where the paint was wore off we blended them in. I have been paint removing these care since the 80's when I had the duster on the roof of the 72 blasted and they ruined every panel warping them with heat. Never blasted the outer panels again. If you do, then you will have to put many coats of primer filler and block sand the lines back in an A-body for hours. The less you Sand, grind , or blast these cars the sharper the lines.
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