Bench grinders with their powerful grind wheels have many uses in woodworking and DIY jobs. The wheels ranged from 6 to 10 inches with varying grits to complete various jobs. They can be used for grinding, buffing, sharpening metal objects, removing rust and polishing wood. Check out our most reviewed product, the 115-Volt 1 HP 8 in. Industrial Metalworking Bench Grinder, JBG-8A.