But when a drill bit breaks off flush in a hole, there aren’t a lot of options, especially for a small bit. If the stars align, though, you may follow this video guide to dissolve the drill bit ...

Armed with a diamond hand file, a bit of muscle power, and lots of patience, you can hand-sharpen the drill bits without any power tools. Since you'll be applying force to a sharp metal object ...

1. Twist drill bits. Especially in steel thicker than ¼", twist drill bits will require extra pressure, lots of lubrication for cooling and some profanity — especially when trying to use a hand ...