Hapstone Premium CBN stones set

Hapstone Premium CBN Sharpening Stones

Hapstone Premium CBN stones are made from cubic boron nitride (CBN) powder and designed for precise and efficient knife sharpening. These stones use a metal-organic bond that provides durability close to metal bonds while maintaining a smoother and more controlled cutting action.

Each stone is mounted on a high-quality anodized aluminum blank, ensuring stability, corrosion resistance, and long service life.

Hapstone Premium CBN stones are suitable for sharpening knives made from modern steels up to 68+ HRC, including advanced powder metallurgy steels and even ceramic knives.

Available Grit Sizes

• 80 grit — Hapstone Premium CBN (200/160 µm)
• 150 grit — Hapstone Premium CBN (100/80 µm)
• 400 grit — Hapstone Premium CBN (40/28 µm)
• 800 grit — Hapstone Premium CBN (20/14 µm)
• 2000 grit — Hapstone Premium CBN (7/5 µm)
• 5000 grit — Hapstone Premium CBN (3/2 µm)

Benefits of Hapstone Premium CBN Stones

• Comfortable sharpening — the stone is hard and durable while remaining smooth and comfortable in use. Often compared to Japanese water stones, but significantly more durable.
• High durability — CBN stones are up to 10 times more durable than traditional water stones.
• Low maintenance — these stones do not require soaking or complicated maintenance.
• Delicate edge processing — CBN grains work efficiently and smoothly, minimizing unwanted scratches on the cutting edge.
• Octahedral crystal structure — CBN crystals have multiple cutting edges with less aggressive corners, allowing efficient sharpening while producing a refined finish.
• Consistent thickness — all stones share the same size, allowing progression through the grit range without changing the sharpening angle.
• High cutting performance — achieved thanks to 100% CBN grain concentration (CBN1 type).

Recommended Finishing

For ultra-fine finishing and mirror polish, we recommend using Hapstone Poly Diamond Suspension.

Specifications

• Stone size: 150 × 24 × 3 mm
• Blank size: 160 × 24 × 5 mm
• Working layer thickness: 3 mm
• Bond: metal-organic
• Abrasive material: CBN (cubic boron nitride)
• Concentration: 100%