Cool idea! Few people know about sharpening drill bits ...

The shape of a drill bit is what makes it work. But it's strangely difficult to visualize this cutting tool and get a handle on what needs to be done to sharpen it. It's a simple thing that's ...

He didn’t have the necessary tools available, like a drill, so he fashioned one himself out of a pencil sharpener and some ... mechanism that is probably a bit more refined.