DuoSharp Bench Whetstones - Fine/Xtra-Fine

DMT Diamond Whetstone Sharpener

The DMT 8 in. Fine Diamond Whetstone Sharpener delivers fast, precise sharpening thanks to its durable diamond surface that stays flat over time. It’s ideal for maintaining knives, tools, and blades with minimal maintenance and exceptional consistency. Trusted by professionals and hobbyists alike, this whetstone balances speed, control, and long-term reliability for sharpening tasks of all kinds.

Users generally praise DMT diamond whetstones for their remarkable flatness, durability, and ability to create razor-sharp edges quickly. They’re seen as professional-grade tools worth the investment, though some note they can feel coarse before breaking in.

The DMT Diamond Whetstone Sharpener model W8EFNB is an 8-inch dual-grit diamond bench sharpening stone from Diamond Machining Technology (DMT). It combines a Fine (600 mesh / 25 micron) surface for sharpening and an Extra-Fine (1200 mesh / 9 micron) surface for polishing and refining an edge.

Features:

• Monocrystalline diamond abrasive surface for fast metal removal
• Dual-sided sharpening stone
• Works dry or with water — no oil required
• Large 8 in. x 2-5/8 in. surface for knives, chisels, plane irons, and other edged tools
• Made in the USA