We used the DD750X sharpener on black oxide, titanium nitride, cobalt, and carbide-tipped drill bits and it worked perfectly on every material, although it did grind away the coating on cheaper bits.

Whether you want something more portable or need a tool on the smaller side, Makita has a cordless drill that's incredibly ...

For years I’ve watched farmers and mechanics, including myself, squirt WD-40, JB-80 or motor oil on drill bits while drilling holes in an attempt to lubricate and cool the drill bit tip.

Drill it out, shoot in an extractor ... you’re out of luck with this shop tip. We’re a bit disappointed that [Adam]’s video ends somewhat abruptly and before showing us the end result.