Tested: Twist-bit sharpeners

Don’t throw away dull twist bits—you can sharpen them yourself.

Universal End Mill Cutter Drill Bit Grinder Sharpener

Hollow Augers

Oil-pulse Impact Drivers

Block blowout without a backer board

Oil-pulse Impact Drivers

Twist Drill Adapter Chucks Contenti 200-740-GRP

Drill Doctor Model 750X - その他

Which Drill Bit Sharpener is Best? Let's find out! Chicago

Drill Doctor: Sharpen Twist Drills, Save Broken Drills - Making

VEVOR Drill Bits Sharpener MR-13B Φ3-Φ13(Φ15) Drill Bits Sharpener