What Does Grit Mean?

In the context of abrasives, grit refers to the size of the abrasive particles used in sandpaper, grinding wheels, and other abrasive products. The grit size is determined by the number of abrasive particles per inch of sandpaper or grinding wheel. The larger the grit number, the finer the abrasive particles and the smoother the surface it produces.

The size of the grit is important because it determines the aggressiveness and efficiency of the abrasive material. Coarse grits, such as 24 or 36 grit, have larger abrasive particles and are more aggressive, removing material quickly but leaving a rougher surface. Fine grits, such as 120 or 240 grit, have smaller abrasive particles and are less aggressive, removing material more slowly but leaving a smoother surface.

In addition to the grit size, the type of abrasive material used in the abrasive product also affects its performance. Common abrasive materials include aluminum oxide, silicon carbide, and diamond, each with their own specific properties and uses.

When selecting an abrasive product, it is important to consider the grit size and the abrasive material, as well as the application and the type of material being worked on, to ensure that the abrasive product is appropriate for the task at hand.