5 Drill Bit Sharpeners That Restore Dull Bits

1

Best Overall

Drill Doctor DD750X Electric Drill Bit Sharpener

Best for mixed workshops with a wide bit range

9.2/ 10 Pickpedia editorial score

Drill Doctor's DD750X sharpens standard twist bits from 3/32 to 3/4 inch and can even restore an edge onto broken bits, which owners appreciate for salvaging a full index. It handles common point angles from 115 to 140 degrees and adds a split-point feature that reduces wear and improves cutting bite. The company designs, engineers, and calibrates these units in Ashland, Oregon, and backs them with a 3 year warranty. Reviewers note the learning curve is real, so expect a few practice bits before your alignment becomes consistent and repeatable.

2

Best for Tough Materials

Portable Drill Bit Sharpener with Extra Wheel

Best for users sharpening hardened and coated bits

8.8/ 10 Pickpedia editorial score

This portable unit covers 3/32 to 3/4 inch bits and grinds 118 degree, 135 degree, and self-centering split points, with heavy-duty jaws that lock flutes to curb off-center drift. A 92W motor spinning at 14,000 RPM drives its 180-grit diamond wheel through HSS, cobalt, masonry, titanium-coated, and carbide-tipped bits, while a rear exhaust port keeps grit contained. The relief-angle markings and material take-off dial help beginners avoid reversed clearance and aggressive first bites. Two diamond wheels ship in the box, plus a chuck, canvas bag, and wrench. Reviewers note the many settings add setup steps compared with simpler tools.

3

Easiest to Use

Electric Drill Bit Sharpener for 3mm to 12mm Bits

Best for beginners with common metric bit sizes

8.3/ 10 Pickpedia editorial score

Built for straightforward jobs, this compact sharpener handles HSS and carbon steel bits from 3mm to 12mm at a fixed 118 degree point. A 120V motor runs at a gentle 1500 RPM, and the guided ports accept a long list of fractional sizes, so most household bits drop right in. At 2.6 pounds and under 7 inches tall it stows easily on a shelf or bench corner. Owners describe it as quick and simple, restoring blunt bits to working condition with little fuss. The trade-off is the fixed angle, which limits it to standard bits rather than flatter heavy-duty points.

4

Most Precise

VEVOR MR-20G Drill Bits Sharpener Grinder

Best for metric users wanting collet-level accuracy

8.9/ 10 Pickpedia editorial score

VEVOR's MR-20G leans into precision, sharpening both point angle and lip relief across a wide 3mm to 20mm range. Eighteen elastic collets plus two chucks lock each bit securely, and the point angle adjusts from 95 to 135 degrees with four DIY relief settings via positioner pins. Swappable CBN and SDC wheels let you match high-speed steel or alloy tungsten materials, while a DC motor turns at 4500 RPM with 45# steel construction for stability. Reviewers value the accuracy for shop and garage work. The many collets and settings mean it rewards patience, so plan for a slower, more deliberate workflow than one-slot tools.

5

Best Compact Add-On

SMARTANG Drill Bit Sharpener Angle Grinder Attachment

Best for owners who already have an angle grinder

8.1/ 10 Pickpedia editorial score

SMARTANG turns an existing 4-1/2 or 5 inch angle grinder into a sharpening station, mounting to 115 and 125 type tools. It restores HSS, cobalt, and masonry bits from 1/8 to 1/2 inch using a stable guide and an optimized 118 degree angle for a factory-style edge. Injection-molded high-strength plastic with copper nuts and aluminum screws resists melting and deformation during high-speed grinding, which owners say outlasts flimsier plastic guides. Because it relies on your own grinder, it stays compact and stows away between jobs. The limitation is obvious, since without a compatible grinder the attachment cannot work on its own.