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?

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 ...

We may receive a commission on purchases made from links. If you're a professional craftsperson or even just an ambitious do-it-yourself devotee, then you know that a cordless drill is one of the most ...