DMT Sharpening

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Overview

DMT Diamond Machining Technology produces diamond sharpening tools for industrial, commercial, and consumer markets, including woodworkers, chefs, and gardeners. The company offers products such as bench stones, portable sharpeners, and guided systems that sharpen, hone, lap, or deburr edges using diamond abrasives.¹²³⁵

History

Founded in 1976, DMT pioneered manual diamond sharpening technology, leveraging diamond's ability to abrade hard metals. The company has been based in Marlborough, Massachusetts since 1983, where it manufactures its products and holds over 10 patents. In 2016, marking its 40th anniversary, DMT was acquired by Acme United Corporation, joining other cutting tool brands.¹⁴⁷

Product Lines

Product Line	Positioning	Price Range
DuoSharp Bench Stones	double-sided diamond bench sharpening	$30 - $100
Portable Diamond Stones	pocket-sized edge maintenance	$15 - $50
Guided Sharpening Systems	assisted angle sharpening kits	$50 - $150
Chisel and Plane Sharpeners	woodworking tool specialists	$40 - $120
Industrial Sharpening Solutions	large-scale production deburring	$100 - $500

Manufacturing

DMT products are manufactured in Marlborough, Massachusetts, USA, at their headquarters facility since 1983. The site includes injection molding systems with robotics for producing patented items like DuoSharp stones. All products are made in the USA.¹²⁷⁸

Notable Products

DuoSharp Bench Stones - Patented double-sided diamond stones for flat-edge sharpening with two grits.
DiaSharp Bench Stones - Monocrystalline diamond stones for precision honing.
FWETools Chisel Sharpeners - Specialized sharpeners for woodworking chisels and plane blades.
Aligner Guided Systems - Rod systems with angle guides for consistent sharpening.
Pocket Sharpeners - Compact diamond hones for field use.

Reputation

DMT is regarded by woodworkers, chefs, and professionals as a reliable provider of fast, durable diamond sharpeners that outperform traditional stones on hard edges. Enthusiasts praise the consistent grit and USA manufacturing, though some note higher prices compared to ceramic alternatives. The brand holds a strong position in manual sharpening due to its patents and longevity.¹³⁴

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