Sharpening Drill Bits with an Angle Grinder This video shows a clever tool designed to sharpen drill bits using an angle grinder. The bright green plastic jig holds the drill bit at a precise angle, allowing the user to safely and accurately grind a new edge onto a dull bit. This is a cost-effective and practical solution for DIYers and professionals, extending the life of their tools and ensuring they have sharp bits on hand for various projects.