Grinders Grinders use powered rotating attachments to work metal and other materials. Bench grinders are mounted to a bench or tabletop while pedestal grinders are mounted to the floor on a pedestal. With an abrasive, wire brush, or buffing wheel attachment, grinders sharpen tools and shape, clean, or polish metal pieces. Grinders can cause severe injuries to hands, fingers, eyes and face if they are not used correctly. Don’t wear gloves that could get pulled into rotating grinder parts along with your fingers and hand. Remove jewelry from around your neck, fingers, and wrists. Wear close-fitting clothing that will not get entangled...