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DMT pioneered diamond sharpening in 1976 and still builds every stone in the USA around the same idea: micronized monocrystalline diamonds bonded to precision-lapped steel plates. Because monocrystalline particles hold their shape instead of fracturing under pressure, the cutting surface stays consistent for years, and unlike a whetstone a DMT plate is guaranteed never to dish or hollow. The stones cut dry or with plain water, with no oil and no heat buildup to threaten a blade's temper.
The Dia-Sharp continuous-surface bench stones here cover the two grits that handle most real sharpening: coarse (45 micron) to reset a neglected edge quickly and fine (25 micron) to bring it to working sharpness. For anyone who struggles holding a consistent angle freehand, the Aligner Deluxe Kit clamps the blade and fixes it at one of seven settings, with swappable 4" diamond plates so the angle never wanders between grits. Both slot into a bench alongside the rest of your knife sharpening supplies.
Dia-Paste picks up where stones stop, with graded diamonds in 6, 3, and 1 micron syringes, color coded and sold individually or as a full progression kit. Applied to leather, hardwood, or MDF, each step erases the scratch pattern of the last until the bevel goes mirror, the same approach behind the other sharpening compounds we carry and the fastest way to stretch the time between full sharpenings.
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