The DMT FWFC DuoSharp is a 8-inch double-sided DuoSharp diamond stone with fine on one side and coarse on the other — interrupted-surface design lets metal swarf clear from the cutting surface. The diamond particles are bonded into a steel substrate using DMT’s monocrystalline diamond process — these stones cut faster than waterstones, stay flat longer, and never need to be soaked or flattened.
Right sharpener for kitchen knives, hunting and EDC blades, woodworking chisels and plane irons, lawn-mower blades, and any tool that takes an edge. DMT is the default reference brand for diamond sharpening — every stone is bonded at the brand’s Marlborough, Massachusetts plant.
DMT — Diamond Machining Technology — manufactures monocrystalline diamond sharpening stones in Marlborough, Massachusetts. The brand pioneered the diamond-on-steel sharpening surface, and DMT stones cut faster and stay flat longer than waterstones or oilstones because the diamonds are bonded into a metal matrix instead of suspended in soft binder. Every stone is bonded and finished at the Marlborough plant.
