Grinding concrete and dust issues | The Floor Pro Community
Feb 12, 2011· That cup is for aggressive grinding. It will take the concrete down quickly. Unless you will only use it to take down ridges or humps, I would recommend a general purpose cup as it will leave the concrete smoother. My grinder is a Bosch Surface Prep tool with the housing being the shroud. Dust is vacuumed through the holes in the cup not the ...