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?

The professional-use Drill Doctor 750X sharpens standard twist and masonry bits from 3/32” to ¾”. The custom point angles can easily be set anywhere from 115 to 140 degrees.The adjustable material ...

Bver tried to cut something with a pair of dull scissors? How about shaving with an old razor? Cutting or trimming with anything that isn't as sharp as it's meant to be is no fun-and the same goes for ...