I've been thinking about buying one of these but I don't know if they are just a gimmick. Also, if they genuinely work well how good do your bits need to be in the first place to be worth sharpening?

We may receive a commission on purchases made from links. You can tell a dull drill bit more or less immediately. If you're drilling wood, you'll likely see thin wisps of smoke as it starts to burn.

An image of a man grinding a drill bit on a bench grinder - Best_Stocker/Shutterstock We may receive a commission on purchases made from links. If you're a ...

Dull drill bits are not usually a type of tool that's worth buying used, unless you can sharpen them yourself. Many companies that sharpen drill bits use precision grinding machines, but there are ...

A collection of woodworking drill bits ready to be sharpened - Vladyslav Varshavskiy/Getty Images The tool has a ⅓-horsepower motor driving two grinding wheels at up to 3450 rpm. The wheels have a ...

Drill bits are so cheap that when one is too chowdered up to keep working, we generally just toss it out. So you might expect a video on sharpening drill bits to be somewhat irrelevant, but [This Old ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Drills and drill bits are an essential part of every handyman's toolkit, and for good ...

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Two Houston-area men have received a U.S. patent for a new kind of drill bit they say will sharpen itself. The "self-sharpening" effect is achieved by the configuration of hardfacing material in the ...