But there is one tool that can sharpen bits in a matter of seconds, and chances are that you already have it in your workshop. That tool is the benchtop belt sander. Though mainly used to sand wood surfaces, a belt sander can also offer a controlled way to bring dull drill bits back from the dead — no bench grinder or specialty sharpener required. The trick lies in positioning the drill bit at the correct angle against a moving abrasive surface, which is exactly what a benchtop belt sander is built to provide. If you prefer a more narrow belt, you can also check out the 1-inch WEN Benchtop Belt and Disc Sander on Amazon for $90.