you can hand-sharpen the drill bits without any power tools. Since you'll be applying force to a sharp metal object, you'll need to wear appropriate protective equipment, such as work gloves and ...

Sharpening a regular drill bit can be done by hand or with a bench ... You can, but as you probably guessed, it takes some particular tools and techniques. You can use power tools like a Dremel ...

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.