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.
5.0 / 5.0
1 Review
Versatile, compact, and portable, the 8" Dia-Sharp® bench stone is a great all-around choice Guaranteed not to hollow or groove, DMT®’s pr...
View full detailsTight space—no worries! Dia-Sharp® 2.5” Diamond Mini-Hone® sharpener with its ergonomically designed handle provides comfortable sharpenin...
View full detailsTight space—no worries! Dia-Sharp® 2.5” Diamond Mini-Hone® sharpener with its ergonomically designed handle provides comfortable sharpeni...
View full detailsQuick edge repair anywhere! A portable enhancement to any tool kit is the 4" Diamond stone in DMT®’s signature polka-dot pattern Stone me...
View full detailsThe uniquely designed Diamond Wave is the first diamond sharpener to combine convex and concave abrasive surfaces Affording longer sharpening ...
View full detailsA portable enhancement to any tool kit is the 4" Diamond stone in DMT®’s signature polka-dot pattern Stone measures 111X23mm Quick edge r...
View full detailsInnovative, multi-patented DuoSharp® Bench Stone is a precision flat, two diamond surfaced sharpener guaranteed to provide consistent, even shar...
View full detailsThe convenient pocket model 4" Diamond Whetstone™ sharpener comes with a protective leather sheath for easy access This allows you to addr...
View full detailsFor professional sharpening results, regardless of skill, depend on DMT® Aligner™ Kits and Accessories. 4" Diamond Whetstone™ for use with A...
View full details4" Diamond Whetstone™ Kit of 4 Assorted Models Convenient 4” pocket models of Diamond Whetstone™ and Machinist sharpeners with convenient bl...
View full detailsThe Dia-Flat™ Lapping Plate is designed to easily flatten all conventional stones and waterstones faster than any other method Using the new...
View full detailsFor awkward, close-fitting spaces use DMT®’s offset Dia-Sharp® 2.5” Diamond Mini-Hone® Sharpener The offset, ergonomically designed handle pro...
View full detailsThe innovative, multi-patented DuoSharp® Bench Stone is a precision flat, two diamond surfaced sharpener guaranteed to provide consistent, ...
View full detailsFor professional sharpening results, regardless of skill, depend on DMT® Aligner™ Kits and Accessories. 4" Diamond Whetstone™ for use w...
View full details5.0 / 5.0
1 Review
Versatile, compact, and portable, the 8 Inch Dia-Sharp® bench stone is a great all-around choice Guaranteed not to hollow or groove, DMT®’...
View full detailsVersatile, compact, and portable, the 8" Dia-Sharp® bench stone is a great all-around choice Guaranteed not to hollow or groove, DMT®’s pr...
View full details5.0 / 5.0
1 Review
Versatile, compact, and portable, the 8" Dia-Sharp® bench stone is a great all-around choice Guaranteed not to hollow or groove, DMT®’s pr...
View full detailsTight space—no worries! Dia-Sharp® 2.5” Diamond Mini-Hone® sharpener with its ergonomically designed handle provides comfortable sharpeni...
View full detailsImprove tool performance with DMT’s easy-to-use Dia-Paste™ Diamond Compound A light application will create a highly polished, mirror fini...
View full details5.0 / 5.0
1 Review
Versatile, compact and portable, the 8 Inch Dia-Sharp® benchstone is a great all-around choice Guaranteed not to hollow or groove, DMT®’s ...
View full detailsProfessionals rely on the superior quality and versatility of DMT® products The DMT DuoBase Bench Stone Accessory can be used with ALL D...
View full detailsProfessionals rely on the superior quality and versatility of DMT® products The DMT DuoBase Bench Stone Accessory can be used with ALL D...
View full detailsThe DMT Double Sided Diafold® Sharpener offers two stage sharpening with compact convenience Two Diamond Whetstone™ sharpeners combined ...
View full detailsExpect cutting edge performance with DMT® 's Dia-Sharp® 6” continuous diamond sharpening bench stone For knives, blades and fine tools. Si...
View full details