The Atoma Tsuboman Diamond Sharpening Plate #140 is a professional tool for aggressive material removal, ideal for both repairing damaged blades and leveling water stones. By using monocrystalline diamonds, the plate offers exceptional durability and effectiveness, and the replaceable abrasive layer ensures a long lifespan.
The abrasive surface with a #140 grit allows for quick and efficient removal of unevenness and changing the blade’s geometry. It is perfect for sharpening hard powder steels, such as ZDP-189, HAP-40, or R2, which can be a challenge for standard water stones. Thanks to the electrolytic diamond bonding process, the plate maintains its performance for a long time and doesn’t wear out as quickly as traditional abrasives.
The base is made of high-quality aluminum, which guarantees stability and comfortable use. The plate’s design allows for uniform sharpening, which is crucial for achieving precise cutting edges. Thanks to the replaceable abrasive layer, users can easily extend the product’s lifespan without needing to buy a new plate.
The Atoma Tsuboman Diamond Sharpening Plate #140 is an indispensable tool for professionals and sharpening enthusiasts, guaranteeing precise, fast, and effective sharpening of even the most demanding steels.
Technical data:
- Sharpener type: diamond stone
- Grit: #140
- Overall dimensions: 210 x 75 x 12 mm
- Abrasive: diamond powder
- Base: aluminum plate
- Replaceable abrasive part
- Weight: 548 grams
- Purpose: knives, razors, chisels, scissors
- Origin: Japan
Advantages of Atoma diamond sharpening stones:
Quickly removes material during repair or changing blade geometry
Fast grinding and leveling
Can be used for sharpening very hard powder steels (ZDP-189, HAP-40, R2)
Maintains its shape and does not wear or warp during use
Lower grits (#140 and #400) are perfect for leveling water stones




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