Epoxy vs 2K Primer: Sanding Grit Ladders That Work
Epoxy primers and 2K high-build primers are both staples in auto body and restoration work, but they don’t sand—or even behave—the same. Epoxy is a corrosion-fighting, tenacious sealer that sands slowly. 2K high-build is a polyester-rich surfacer designed to block...