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Most people use drill bits until they stop cutting cleanly, then toss them without thinking twice. It’s become almost second nature, especially since replacement bits are easy to find and relatively inexpensive.

But those dull bits piling up in a drawer usually aren’t worn out for good, they’ve just lost their edge.

When drill bits lose their edge, it’s tempting to push harder while drilling, but that usually leads to overheating, breakage, or rough, uneven holes. Sharpening them instead not only saves money, it also makes your tools safer and easier to use.

Use a Drill Bit Sharpener

A drill bit sharpener is one of the easiest and most consistent ways to restore dull bits, especially if you don’t have much experience sharpening by hand. These tools are designed to guide the bit at the correct angle, so you don’t have to guess or worry about uneven edges.

Most sharpeners also let you adjust the angle and even refine the tip for better performance, which makes them useful for different types of drill bits. Once set up, the process is quick, you simply insert the bit and rotate it against the internal grinding wheel.

If you’ve got a large collection of old bits you don’t want to toss, a sharpener can turn that “junk drawer” into a usable supply again with very little effort.

Use a Bench Grinder

A bench grinder is a classic method and a favorite among experienced DIYers. It takes a bit of practice, but once you get the feel for it, you can sharpen drill bits quickly and precisely.

The key is holding the bit at the correct angle (typically around 60 degrees) and grinding just enough to restore the edge without removing too much metal. You’ll also need to pause frequently and cool the bit in water to prevent overheating, which can weaken the metal.

This method gives you more control and works well for heavily worn or damaged bits but it does require a steady hand and some patience to get both sides even.

Use a Sharpening Jig for Better Control

If you like the idea of using a bench grinder but want more precision, a sharpening jig is a great upgrade. It holds the drill bit in place and guides it at the correct angle, making it much easier to get consistent results.

Instead of trying to balance everything by hand, the jig allows you to focus on smooth, controlled movements. This is especially helpful if you’re sharpening multiple bits and want them all to perform the same way.

It’s a simple tool, but it takes a lot of the guesswork out of the process and can help you get cleaner, more accurate edges without a steep learning curve.