One small word of caution if you're in a "drive it while you work on the body" situation. It's tempting to spray a light coat of primer over sheet metal repairs over weeks or months, and then do an overall paint job when the metalwork is finished. One problem- - - - - -primer soaks up moisture like a sponge, and if you do your overall paint job without sanding off all the temporary primer, you run the risk of creating a rust layer under your expensive new paint job. Ditto for body filler if it stays exposed to the weather for any length of time. When I co-owned a body shop, we would refuse to paint a vehicle if the owner insisted we apply finish paint over primer that had been exposed to the weather, even for a few days. It's OK to spot prime as you go, but always sand it ALL off and reprime before applying the final finish.
Jerry
