Can you sand concrete countertops?
Sanding Concrete Countertops. Do you need to sand concrete countertops but don’t want to spend the money to buy a brand new wet grinder. Use Z Grit-Discs to smooth and polish your countertops or to round any sharp, jagged corners. Z Grit-Disc comes in 6 different grits 60, 80, 120, 220, 320, and 400.