Venev Gemini Series Curved Diamond 6" x ½"

Curved Venev Bonded Diamonds are used for sharpening inwardly curved blades on Hapstone knife sharpeners. Diamond sharpening stones offer excellent performance in sharpening knives of any steel. The working surface is curved. Curved diamonds are designed to sharpen kukris, karambits, hawkbills, scythes and any type of recurved blades.

Curved Diamonds consist of a 2mm-thick diamond-bearing layer on a metal base. The diamond-bearing layer contains evenly distributed diamond grains with metal bonding. Metal bonding gives the sharpening diamond stone a long lifespan.

Venev Diamonds are available in a wide range of grit from F80 (200μm) to F1200 (3μm).

• Working surface: 150 x 12mm (6" x ½")
• Abrasive: Synthetic Diamonds with copper-tin alloy bonding
• Curvature: 50mm
• Geometry tolerance: up to 0.2mm

Venev Diamonds are recommended to be used with water as lubricant for the best feedback. The diamond does not absorb water. Splash water on the stone's surface. Dry usage is acceptable practice.

Venev Diamonds may have the geometry tolerance up to 0.2mm. Because diamonds are curved, extra lapping by a customer is not permitted. Gemini diamonds don't require any preparations.

Gemini diamonds may seem bald out-of-the-box. This is normal.

Gemini diamonds may become darker over time due to natural metal oxidizing. It does not affect the sharpening.

Metallic Binders (MMC)

M2-01 - Copper-tin bronze alloy.

MS-1 - Metal-matrix composite (MMC) - Copper-tin bronze alloy reinforced with silicon carbide.

MB-1 - Metal-matrix composite (MMC) - Copper-tin bronze alloy reinforced with boron carbide.

MS-1A - Metal-matrix composite (MMC) - Aluminum-copper alloy reinforced with silicon carbide.

Resin Binders

B1-10 - Boron-modified phenolic resin (BPF) composite - Made of powdered bakelite, copper additive

B2-01 - Boron-modified phenolic resin (BPF) composite - Made of liquid bakelite, iron additive (softer than В1-10)

В2-01М - Boron-modified phenolic resin (BPF) composite - Made of liquid bakelite, copper additive (softer than В2-01)

OSB (OCB) – A proprietary phenolic resin composite.

(OSB and OCB refer to the same binder; the difference arises from a transliteration quirk of the Cyrillic “ОСБ,” which can be rendered as either “OSB” or “OCB” in Latin script.)