Learn several effective ways to sharpen and repurpose both step and twist drill bits using an angle grinder in this hands-on tutorial. This video demonstrates how to create a custom jig from a wooden ...
Learn how to sharpen knives, scissors, drill bits, chisels, mower blades, and more at home with this step-by-step ...
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?