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. A hand drill is only as good as its drill bit. You may have one of the top-rated drills for home projects, but it won't be able to do the job ...