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.
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
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.
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.
Read MoreDMT (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.
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
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.
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.
One tool for many tasks—an excellent value for home, shop and recreational use The Diafold® Serrated Knife Sharpener not only maintains serr...
View full detailsIdeal 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 ...
View full detailsIdeal 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...
View full detailsA beautiful hardwood box of three 6" Diamond Whetstone™ sharpeners makes a perfect gift The perfect sharpener for at home or in the shop offeri...
View full detailsFor professional sharpening in tight spaces, the Kit of Dia-Sharp® 2.5" Diamond Mini-Hone® Sharpeners has you covered Featuring ergonomic handles...
View full detailsTake your sharpening anywhere with the portable Dia-Sharp® Credit Card Diamond Sharpener. Fitting easily into any pocket or wallet, it also come...
View full detailsThe innovative, multi-patented DuoSharp® Bench Stone is a precision flat, two diamond surfaced sharpener guaranteed to provide consistent, even s...
View full detailsOffering two stage sharpening and a compact design, the Double Sided Diafold Sharpener is as strong as it is versatile. Two different grits are...
View full detailsFor special projects, use specialized DMT® Diamond Honing Cones The tapered diamond slip stones included in the kit are excellent for working gou...
View full detailsThe Dia-Flat™ Lapping Plate is designed to easily flatten all conventional and waterstones faster than any other method. Using the new revolutio...
View full detailsThe 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...
View full detailsFor awkward, close-fitting spaces use DMT®’s offset Dia-Sharp® 2.5” Diamond Mini-Hone® Sharpener The offset, ergonomically designed handle prov...
View full detailsFor awkward, close-fitting spaces use DMT®’s offset Dia-Sharp® 2.5” Diamond Mini-Hone® Sharpener The offset, ergonomically designed handle provi...
View full detailsThe convenient pocket model 4" Diamond Whetstone™ sharpener comes with a protective leather sheath for easy access This allows you to address a...
View full detailsTake 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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