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Premium CBN sharpening stones with metal-organic bond and 100% CBN concentration for precise, durable, and controlled sharpening.
CBN abrasive
Made from cubic boron nitride powder and suitable for advanced steels up to 68+ HRC.
Bond system
Provides durability close to metal bonds while keeping the sharpening feel smoother and more controlled.
Concentration
High CBN concentration delivers strong cutting performance and consistent work across the full grit progression.
Grit range
Micron range
Hapstone Premium CBN stones cover the full sharpening progression from coarse metal removal to fine edge refinement.
Available grit sizes: 200/160 µm, 100/80 µm, 40/28 µm, 20/14 µm, 7/5 µm, and 3/2 µm.
Performance
Hapstone Premium CBN stones combine high durability with a comfortable sharpening feel often compared to Japanese water stones.
CBN grains work efficiently and smoothly, helping minimize unwanted scratches while producing a refined cutting edge.
Finishing
For ultra-fine finishing and mirror polish, use Hapstone Poly Diamond Suspension after the fine CBN stones.
This helps complete the sharpening progression with a cleaner and more refined final edge.
Best for
• Powder metallurgy steels
• High-hardness steels
• Ceramic knives
• Guided sharpening systems
• Full sharpening progression
Specifications
