Venev Set "Ursa" Series Dual Side Diamond

Venev Ursa Series Dual-Side Diamond Stones are designed for sharpening knives on Hapstone guided knife sharpeners as well as for freehand sharpening. Diamond sharpening stones provide excellent performance when working with any type of knife steel, including high-hardness and powder steels. The Ursa Series features a dual-side diamond plate mounted on a rigid aluminum base. Each side contains a 1 mm thick diamond-bearing layer with evenly distributed synthetic diamonds bonded with a resin binder. Compared to coated diamond plates, bonded diamonds offer better tactile feedback, smoother sharpening feel, and significantly longer lifespan. The stones use the FEPA-F grit classification system. Coarser grits use the legacy binder, while finer grits utilize the improved OCB binder, which provides cleaner scratch patterns and smoother finishing. The set includes three dual-side stones: F80 + F150 F240 + F400 F800 + F1200 This progression covers the entire sharpening process from coarse work to finishing. The narrow profile of the Ursa stones makes them especially useful for: Sharpening recurve blades Working in tight or hard-to-reach areas Detail sharpening tasks Specifications Stone size: 150 × 16 × 10 mm (6" × 1/2" × 3/8") Weight: 90 g (3.2 oz) Abrasive: Synthetic diamonds Bond: Resin bonded (phenol-formaldehyde) Base material: Aluminum Flatness tolerance: up to 0.2 mm How to Use Venev diamond stones are recommended to be used with water as a lubricant for the best sharpening feedback. The diamond layer does not absorb water, so simply splash water onto the surface before use. Dry use is possible, but it may lead to faster stone loading and slightly increased wear. If necessary, stones can be flattened using loose silicon carbide powder on a flat surface. Using diamond lapping plates is not recommended.