Best Grinding Discs Boat Design NetA polish/buffer type of grinder with a 7 9 10 or the rare 12 pad is the fast material removal tool If you re serious about material removal then it s all about the grit and speed 16 grit on my 10 will eat through most anything in very short order -type grinding right-,RIDGID 4 in Double Row Diamond Cup Wheel The Home Depot4 in Double Row Diamond Cup Wheel is rated 4 8 out of 5 by 206 Rated 5 out of 5 by JT1967 from Works great for grinding concrete Used on basement floor to remove glue spots from vinyl flooring …… Get More