[Evans, Marv]

Matt, Epoxy Coat suggested using the grinder on my floor (new) because of the fiber. According to them if it is etched, the little fibers stick up. When the coating is applied, the fibers end up sticking up through the surface - at least in places. Covered with the epoxy, they end up like little needles. It's either grind or burn the surface with a propane torch and sweep them out the door.