About Us

DMT® History

By definition, only one company can be the industry leader.  Diamond Machining Technology (DMT) is that leader, recognized worldwide for product quality, performance and customer service since 1976.   Only the best products will carry the DMT® brand. 

Founded in 1976, DMT is the leading innovator of manual diamond sharpening technology for people and industries dependent upon high performance edges. Incorporating diamond’s ability to abrade hard metals, DMT's engineering and product development expertise and patented processes have evolved and expanded to service industrial, commercial and consumer markets. The company offers sharpening solutions for virtually every user-from do-it-yourselfers to professionals and large commercial operations. DMT® specialized, precision sharpening systems function easily and efficiently to sharpen, hone, lap or deburr in the production, maintenance and repair cycles of a myriad of products.

DMT® continues to be an entirely ‘Made in the USA’ company with all products manufactured in the company’s facility in Marlborough, Massachusetts and distributed throughout the world.

How was the DMT® sharpener invented? Originally a manufacturer of grinding wheels the company repurposed a center punch-out of a diamond grinding wheel and developed an entire new way of manual sharpening. After testing a sample of a center punch out sent to them, a purchasing agent for L.L. Bean extolled the product’s sharpening performance and worked with the engineers at DMT® to refine the resulting product..The result of that cooperation launched DMT® on its way to becoming the recognized leader and the industry standard in diamond honing hand tools. L.L. Bean remains a DMT® customer to this day.

Suddenly, there was an available alternative to the traditional methods of sharpening that required no messy oil, never grooved or hollowed, and lasted and lasted. It was an unbreakable, clean-cutting, and super-fast sharpener, It was a tool that could sharpen any material, including the toughest composites, ceramics and any metal, including tungsten carbide and even polycrystalline diamond (PCD) inserts.

A variety of successful new products in receptive markets fueled the company’s growth. Many innovative DMT® brands, copied but never equaled, are:

Diamond Whetstone™ – Renowned polka dot pattern diamond surface that facilitates quick precision honing of all tools in every market.

The Double Sided Diafold® Diamond Sharpener – First two grit sharpening in a convenient pocket sized tool.

Diafold® Serrated Knife Sharpener – Sharpens the range of serrated blades in both outdoor and culinary market.

Aligner® Easy Edge-Guided Sharpening System - provides the components for guided strokes, exact edge bevel and consistent angels, producing the ultimate in fast, accurate knife sharpening.

Diamond Mini-Sharp® Sharpener - easily travels with you! Folding handle protects the stone when not in use. Lightweight and ultra portable, handy key chain swivel ring for your keys or attach to zipper pulls or backpacks.

Dia-Sharp® Sharpeners - Continuous diamond surface sharpening stones provide cutting edge performance and are recognized for their superior quality particular to all DMT® products. They feature an uninterrupted diamond sharpening surface that allows users to quickly put a razor edge on small contact area and pointed tools.

DuoSharp® Sharpeners  — Multi-patented, first two-sided bench stone, manufactured using the latest technologies to ensure unparalleled precision flatness.

Dia-Sharp® Mini-Hone® Sharpeners — Continuous diamond surface with Easy Access tip. Color-coded ergonomic handle eases sharpening, deburring and honing in tight spaces.

Diafold® Magna-Guide®  Sharpening System— A Diafold® fine / extra-fine sharpener and Aligner™Blade Guide joined with a Magnetic Angle Guide (MAG) offers portable, adjustable guided sharpening. The blade guide provides 7-Angle adjustability for the right edge every time.

Dia-Sharp® Magna-Disc™ Sharpening System - The Dia-Sharp® Magna-Disc™ System  is designed to work with Work Sharp™ Models WS2000 and WS3000. The diamond discs will outlast any conventional paper abrasive discs by more than 50-to-1.   Utilizing the Magna-Disc™, allows quick and easy grit changes versus messy peel and stick paper discs.  Also, unlike paper discs, there is no danger of ruining the temper of tools from overheating. The Dia-Sharp® Magna-Disc™ System conducts heat away from the tool and will not generate any sparks. This is cooler and safer.

DiaFlat®  Diamond Lapping Plate- Dia-Flat®  Lapping Plate designed to easily flatten all conventional and waterstones in less time than other methods. Using the new revolutionary DMT® Diamond Hardcoat Technology™, this lapping plate outlasts any other diamond coating in the market.

DMT® Products can be found in markets as varied as culinary, lawn and garden, woodworking and carving, speed skating, skiing, snowboarding, camping, fishing, hunting, police &security, military, industrial, commercial and home improvement (DIY). The DMT® brand is sold worldwide and known internationally as the Leader in Diamond Sharpening and continues to receive awards for its innovative products and promotion. The firm has been acknowledged with numerous domestic and international awards for product innovation, merchandising and outstanding customer service.

For more information on DMT®’s product line visit our Contact page.