Here we use a 4½-inch angle grinder and a 60-grit flap disk. But you could also use a specialized grinding wheel in a drill, a bench grinder, a belt grinder, or simply a file if all the blade ...

Unlike freehand sharpening on the grinding wheel, the General Tools drill grinding attachment allowed us to use our bench grinder to sharpen smaller bits effectively. Setup was surprisingly easy ...

and if you’ve ever turned off a bench grinder and waited for it to spin down, you know there’s either a lot of energy in a grinder wheel. Grinder Minder also adds accidental restart protection ...