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DMT Diamond Sharpening Tools

DMT (Diamond Machining Technology) produces industry leading diamond sharpening stones and files for knives, chisels and planer blades. Their monocrystalline diamond surfaces cut quickly and stay flat, giving you razor sharp edges in seconds. Keep your cutting tools performing at their best with DMT sharpeners.

What sets DMT sharpeners apart from other sharpening stones?

DMT has specialized in monocrystalline diamond sharpening surfaces since 1976. Their stones (e.g. DuoSharp®, Dia‑Sharp®, Diamond Whetstone™) are engineered to stay perfectly flat, resist wear, and provide consistent, fast cutting performance across repeated use—making them ideal for knives, woodworking chisels, and tool maintenance

What’s the difference between DuoSharp® and Dia‑Sharp® stones?

  • DuoSharp® features an interrupted “polka-dot” surface that traps swarf (metal filings), helping prevent clogging and maintain fast cutting. It typically offers double-sided grits or a continuous side in some “Plus” models.

  • Dia‑Sharp®, by contrast, uses a continuous diamond surface, which is ideal for sharpening small or pointed tools because there are no recesses to catch.

How long do DMT diamond stones last, and how should I maintain them?

DMT stones can last several years—but not forever—depending on use and maintenance. Their lifespan is extended by rinsing after use, drying before storage, and occasional cleaning with a toothbrush and abrasive cleaner if clogged. If performance declines, cleaning typically restores effectiveness.

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DMT | Diafold® Serrated Knife Sharpener (Coarse) FSKC - BPM Toolcraft
DMT | Diafold® Serrated Knife Sharpener (Coarse) FSKC - BPM Toolcraft Sold out
R 899.00
R 899.00 - R 899.00
R 899.00
R 699.00
R 699.00 - R 699.00
R 699.00

DMT | Diafold® Serrated Knife Sharpener (Coarse) FSKC

DMT

     One tool for many tasks—an excellent value for home, shop and recreational use The Diafold® Serrated Knife Sharpener not only maintains serr...

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R 899.00
R 899.00 - R 899.00
R 899.00
R 699.00
R 699.00 - R 699.00
R 699.00
Sold out
DMT | 6" Dia-Sharp Double-sided Bench Stone, X-Fine/Fine D6EF - BPM Toolcraft
DMT | 6" Dia-Sharp Double-sided Bench Stone, X-Fine/Fine D6EF - BPM Toolcraft Sold out
R 1,799.00
R 1,799.00 - R 1,799.00
R 1,799.00
R 1,499.00
R 1,499.00 - R 1,499.00
R 1,499.00

DMT | 6" Dia-Sharp Double-sided Bench Stone X-Fine/Fine D6EF

DMT

     Ideal to repair damaged edges and create keen edges Two sided diamond bench stone measures 6" x 2" x 1/4" One side is fine grit and one side ...

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R 1,799.00
R 1,799.00 - R 1,799.00
R 1,799.00
R 1,499.00
R 1,499.00 - R 1,499.00
R 1,499.00
Sold out
DMT | 6" Dia-Sharp Double-sided Bench Stone, Coarse/Fine D6FC - BPM Toolcraft
DMT | 6" Dia-Sharp Double-sided Bench Stone, Coarse/Fine D6FC - BPM Toolcraft Sold out
R 1,799.00
R 1,799.00 - R 1,799.00
R 1,799.00
R 1,499.00
R 1,499.00 - R 1,499.00
R 1,499.00

DMT | 6" Dia-Sharp Double-sided Bench Stone Coarse/Fine D6FC

DMT

     Ideal to repair damaged edges and create keen edges  Two sided diamond bench stone measures 6" x 2" x 1/4" One side is fine grit and one side...

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R 1,799.00
R 1,799.00 - R 1,799.00
R 1,799.00
R 1,499.00
R 1,499.00 - R 1,499.00
R 1,499.00
Sold out
DMT | Diamond Whetstone™ Three Stone 6" Set in Hardwood Box W6EFC - BPM Toolcraft
DMT | Diamond Whetstone™ Three Stone 6" Set in Hardwood Box W6EFC - BPM Toolcraft Sold out
R 2,899.00
R 2,899.00 - R 2,899.00
R 2,899.00
R 2,599.00
R 2,599.00 - R 2,599.00
R 2,599.00

DMT | Diamond Whetstone™ Three Stone 6" Set in Hardwood Box W6EFC

DMT

A beautiful hardwood box of three 6" Diamond Whetstone™ sharpeners makes a perfect gift The perfect sharpener for at home or in the shop offeri...

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R 2,899.00
R 2,899.00 - R 2,899.00
R 2,899.00
R 2,599.00
R 2,599.00 - R 2,599.00
R 2,599.00
Sold out
Sold out
R 699.00
R 699.00 - R 699.00
R 699.00
R 599.00
R 599.00 - R 599.00
R 599.00

DMT | Dia-Sharp® 2.5" Mini-Hone® Set Of 3

DMT

  For professional sharpening in tight spaces, the Kit of Dia-Sharp® 2.5" Diamond Mini-Hone® Sharpeners has you covered Featuring ergonomic handles...

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R 699.00
R 699.00 - R 699.00
R 699.00
R 599.00
R 599.00 - R 599.00
R 599.00
Sold out
Sold out
R 899.00
R 899.00 - R 899.00
R 899.00
R 799.00
R 799.00 - R 799.00
R 799.00

DMT | 3" Dia-Sharp® Set Of 3

DMT

  Take your sharpening anywhere with the portable Dia-Sharp® Credit Card Diamond Sharpener. Fitting easily into any pocket or wallet, it also come...

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R 899.00
R 899.00 - R 899.00
R 899.00
R 799.00
R 799.00 - R 799.00
R 799.00
Sold out
Sold out
R 4,199.00
R 4,199.00 - R 4,199.00
R 4,199.00
R 3,299.00
R 3,299.00 - R 3,299.00
R 3,299.00

DMT | 10" DuoSharp® Bench Stone Fine/Coarse with Base

DMT

  The innovative, multi-patented DuoSharp® Bench Stone is a precision flat, two diamond surfaced sharpener guaranteed to provide consistent, even s...

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R 4,199.00
R 4,199.00 - R 4,199.00
R 4,199.00
R 3,299.00
R 3,299.00 - R 3,299.00
R 3,299.00
Sold out
Sold out
R 1,199.00
R 1,199.00 - R 1,199.00
R 1,199.00
R 999.00
R 999.00 - R 999.00
R 999.00

DMT | Double Sided Diafold Sharpener Fine/Extra Fine

DMT

  Offering two stage sharpening and a compact design, the Double Sided Diafold Sharpener is as strong as it is versatile. Two different grits are...

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R 1,199.00
R 1,199.00 - R 1,199.00
R 1,199.00
R 999.00
R 999.00 - R 999.00
R 999.00
Sold out
Sold out
R 949.00
R 949.00 - R 949.00
R 949.00
R 799.00
R 799.00 - R 799.00
R 799.00

DMT | Diamond Cone Medium Fine

DMT

  For special projects, use specialized DMT® Diamond Honing Cones The tapered diamond slip stones included in the kit are excellent for working gou...

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R 949.00
R 949.00 - R 949.00
R 949.00
R 799.00
R 799.00 - R 799.00
R 799.00
Sold out
Sold out
R 5,299.00
R 5,299.00 - R 5,299.00
R 5,299.00
R 4,799.00
R 4,799.00 - R 4,799.00
R 4,799.00

DMT | Dia-Flat™ Lapping Plate 95 Micron

DMT

  The Dia-Flat™ Lapping Plate is designed to easily flatten all conventional and waterstones faster than any other method. Using the new revolutio...

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R 5,299.00
R 5,299.00 - R 5,299.00
R 5,299.00
R 4,799.00
R 4,799.00 - R 4,799.00
R 4,799.00
Sold out
Sold out
R 599.00 - R 599.00
R 599.00
R 599.00
R 599.00 - R 599.00
R 599.00

DMT | Diafold® Flat Folding File Coarse

DMT

   The DMT® Diafold® Flat File is purpose built for confined and/or narrow sharpening tasks. Only 1/16" thick, the Flat File features a diamond su...

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R 599.00 - R 599.00
R 599.00
R 599.00
R 599.00 - R 599.00
R 599.00
Sold out
Sold out
R 229.00 - R 229.00
R 229.00
R 229.00
R 229.00 - R 229.00
R 229.00

DMT | Dia-Sharp® 2.5" Mini-Hone® Offset, Coarse

DMT

For awkward, close-fitting spaces use DMT®’s offset Dia-Sharp® 2.5” Diamond Mini-Hone® Sharpener The offset, ergonomically designed handle prov...

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R 229.00 - R 229.00
R 229.00
R 229.00
R 229.00 - R 229.00
R 229.00
Sold out
Sold out
R 299.00
R 299.00 - R 299.00
R 299.00
R 229.00
R 229.00 - R 229.00
R 229.00

DMT | Dia-Sharp® 2.5" Mini-Hone® Offset Fine

DMT

   For awkward, close-fitting spaces use DMT®’s offset Dia-Sharp® 2.5” Diamond Mini-Hone® Sharpener The offset, ergonomically designed handle provi...

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R 299.00
R 299.00 - R 299.00
R 299.00
R 229.00
R 229.00 - R 229.00
R 229.00
Sold out
Sold out
R 599.00
R 599.00 - R 599.00
R 599.00
R 499.00
R 499.00 - R 499.00
R 499.00

DMT | 4" Diamond Whetstone-Fine

DMT

The convenient pocket model 4" Diamond Whetstone™ sharpener comes with a protective leather sheath for easy access This allows you to address a...

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R 599.00
R 599.00 - R 599.00
R 599.00
R 499.00
R 499.00 - R 499.00
R 499.00
Sold out
DMT | 3" Dia-Sharp® Sharpener, Coarse, Credit Card Sized, Blue D3C - BPM Toolcraft
Sold out
R 349.00 - R 389.00
R 349.00 - R 389.00
R 349.00
R 349.00
R 349.00 - R 349.00
R 349.00

DMT | 3" Dia-Sharp® Sharpener Credit Card Sized - Various Grits

DMT

Take your sharpening anywhere with the ready-to-go Dia-Sharp® credit card-sized diamond sharpener Fits easily in a pocket or wallet Each sharpe...

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R 349.00 - R 389.00
R 349.00 - R 389.00
R 349.00
R 349.00
R 349.00 - R 349.00
R 349.00
Sold out