SKU: 101-450 | MPN: W250CXNB

DMT 10" Dual Grit Diamond Sharpening Stones

Q: What size is the DMT DuoSharp sharpening surface?

The stone offers a generous 10" x 4" sharpening surface, large enough for chisels, plane irons, and wider tools. See more diamond & water stones .

Q: What grit options are available?

Choose the Blue Stone in Coarse / Extra Coarse (101-450) or the Red Stone in Fine / Extra Fine (101-452). Each plate has two grits thanks to the patented double matrix.

Q: How much diamond is in the stone?

Each plate contains more than 4 carats of micronized monocrystalline diamond, which gives it fast, aggressive cutting for quick edge work.

23% off

$139.90 ~~Regular price$181.79~~

Grit

Extra Coarse / Coarse Fine / Extra Fine Set of Both

Description Reviews Q&A

This DMT DuoSharp diamond stone features an innovative and patented double matrix with extra coarse grit diamond on one side and coarse on the other. This two-stage sharpening system provides fast, clean and consistent results every time. Only use water to lubricate this stone, the non-porous surface resists loading and quickly wipes clean. DMT Diamond stones start flat and stay flat, they never hollow or develop grooves like Waterstones. This is a shop favorite for grinding the cutting edges of chisels and plane irons but it can also be used for sharpening your router bits, kitchen knives or practically any steel or carbide tool. Unlike electric grinders that can overheat your tools' edge, DMT Diamond Stones won't damage your tool. This stone can also be used to flatten your softer Norton Waterstones. Of course, the other advantage of diamond stones is that they dont need to be flattened like waterstones.

Features include:

Choose your grit:
- Blue Stone: Coarse / Extra Coarse (101-450)
- Red Stone: Fine / Extra Fine (101-452)
More than 4 carats of micronized monocrystalline diamond make for fast cutting
Generous 10" x 4" sharpening surface
Engineered to be rugged, lightweight and compact
Hones your carbide, steel, ceramic, glass or stone cutting surface
Includes non-skid mat

Frequently Asked Questions

What size is the DMT DuoSharp sharpening surface?

The stone offers a generous 10" x 4" sharpening surface, large enough for chisels, plane irons, and wider tools. See more diamond & water stones.

What grit options are available?

Choose the Blue Stone in Coarse / Extra Coarse (101-450) or the Red Stone in Fine / Extra Fine (101-452). Each plate has two grits thanks to the patented double matrix.

Do I need oil to use this stone?

No. Only use water to lubricate this stone. The non-porous surface resists loading and wipes clean quickly with no messy oil.

Does a diamond stone need flattening?

No. DMT diamond stones start flat and stay flat, so they never hollow or develop grooves like waterstones, and they never need to be flattened themselves.

What tools can I sharpen with it?

It hones carbide, steel, ceramic, glass, and stone cutting surfaces, making it ideal for chisels, plane irons, router bits, and kitchen knives.

Will it overheat my tool's edge?

No. Unlike electric grinders that can overheat and damage an edge, DMT diamond stones sharpen cool and will not harm your tool.

Can it flatten my waterstones?

Yes. This stone can be used to flatten softer Norton waterstones. Explore other diamond & water stones to build a full progression.

How much diamond is in the stone?

Each plate contains more than 4 carats of micronized monocrystalline diamond, which gives it fast, aggressive cutting for quick edge work.

Does it come with anything else?

Yes. The stone includes a non-skid mat to keep it stable on your bench while you sharpen.

Who makes this sharpening stone?

It is the DMT DuoSharp diamond stone, made by DMT and known for its rugged, lightweight, compact construction. Browse more sharpening accessories to complete your setup.

DMT 10" Dual Grit Diamond Sharpening Stones