Definitely a go-to product. I needed it to repair a botched base coat paint job done by the owner of the car. They used too hot of a reducer and shot the whole car dry as a bone. Instead of sanding the whole car with 120 grit, I hit the worst places, sanded with 320 then let the 2k fill the rest. It sanded nice and dry and didn't gum up the paper. Couple of repairs after the blocking and this is sweet even in the primer.