Review on 🔸 3M Roloc Bristle Disc Grade 18733 by Joshua Flake

Like most buyers I also use it to remove the engine gasket. They're great for that. I have made several motors with it and have reordered many times. They're fairly gentle on aluminum, and while a coarser grit can be used on cast iron, they're good too, but take longer. With enough work, the surface of this preparation will be like new.