Learn several effective ways to sharpen and repurpose both step and twist drill bits using an angle grinder in this hands-on ...

An image of a man grinding a drill bit on a bench grinder - Best_Stocker/Shutterstock If you're a professional craftsperson or even just an ambitious do-it-yourself ...

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?

Close-up of unrecognizable craftsperson holding a hand drill and picking a drill bit from a set on a worktable. - Mixetto/Getty Images A hand drill is only as good as its drill bit. You may have one ...