A bench grinder is a grinder used to drive abrasive wheels. These types of grinders are commonly used to hand grind cutting tools and perform other rough grinding. Depending on the grade of the grinding wheel it may be used for sharpening cutting tools such as lathe tools or drill bits. Metalworkers often use a bench grinder to shape rough metal before welding. A wire brush wheel or some buffing wheels can be interchanged with the grinding wheels in order to clean or polish work-pieces. Bench grinders don't take up much room in the shop, but can turn long-term jobs into easier ones, saving time!