DMT 95-Micron 10″ x 4″ Dia-Flat Flattening Plate

The DMT 95-Micron 10″ x 4″ Dia-Flat Flattening Plate is a precision diamond lapping plate that keeps your sharpening stones dead flat — the foundation of truly sharp chisels and plane blades. Certified flat to +/-0.0005″, this aggressive 95-micron plate quickly renews the surface of waterstones, Arkansas stones, and other conventional stones, while DMT’s Diamond Hardcoat Technology lets you flatten with less pressure. It’s a professional-grade staple in our collection.

Flat stones make sharp edges

A sharp edge starts with a flat stone. As you sharpen, stones wear hollow, and those high and low spots transfer directly to your blades as concave bevels. The Dia-Flat 95 removes high spots quickly and leaves a superior, renewed surface, so your plane irons and chisels come out flat and keen every time.

Aggressive yet refined

The 95-micron diamond surface is coarse enough for fast material removal, yet leaves a clean finish on the stone. With more than 30 carats of industrial diamond and durable construction, it delivers years of consistent, reliable performance — which is why professionals rely on DMT for tool maintenance.

Key specifications

Flatness: Certified to +/-0.0005″

Grit: 95 micron (coarse, aggressive removal)

Size: 10″ x 4″ x 0.375″ (254mm x 102mm x 10mm)

Diamond content: More than 30 carats of industrial diamond

Flattens: Waterstones, Arkansas stones, and conventional stones

Made in: USA

Pairs well with

Keep your full sharpening station performing with our , , and other . A flat stone is the first step to perfectly honed .