Shot Blasters and Concrete Surface Preparation | Concrete ...
Nov 01, 2003· (Start with small shot and run the machine quickly, Risher advises, slowing down or switching to bigger shot as needed.) Thicker epoxies are harder to blast through. And shot will just bounce off elastomeric or rubberized coatings. Urethane coatings will transmit the energy of the blast to the concrete underneath, crushing it.