Diamond Machining Technology (DMT®) is proud that ALL of their design and manufacturing is done in the DMT® factory in Marlborough, Massachusetts. Virtually all raw materials, packaging and marketing materials are sourced in North America. This allows DMT® to ensure the highest levels of production quality and provide the most responsive customer service. Since 1976, DMT® has had a tradition of excellent quality and service to uphold - something they don’t take lightly.

DMT® products are exported worldwide to over 27 countries. Superior edge care is a global passion.

Since 1976, DMT® has been committed to one thing - to innovate and produce the world's finest diamond knife and tool sharpeners. All DMT® products are made using the highest quality materials and workmanship and are guaranteed to be free of defects. Any products found to be defective will be replaced free of charge - it's that simple!