Abrasive

DEFINITION

An abrasive is any substance which wears down a surface by rubbing against it. Abrasives are available in many forms, including powders, compounds, papers, wheels or disks, brushes, belts, and more, each most appropriate for certain applications. Sandpapers and grinding disks and wheels, for instance, have abrasive surfaces used to wear down surfaces, or to smooth out rough ones. Wear safety glasses!