Yakutian knife

The Yakutian knife (Yakut: саха быһаҕа, Russian: якутский нож), sometimes called the Yakut knife, is traditional knife of Yakuts (an ethnic group from the Sakha Republic (or Yakutia), region of Siberia), used for working with wood, hides, skins, fish and meat. The knife has been used in Yakutia for hundreds of years without significant changes in its design.

Typical Yakutian knives have a blade length of 4–7 inches (10–18 cm), and 1–1 ¹⁄₂ inches (2.5–3.8 cm) wide. The unique feature of this knife is that the blade is asymmetrical; one side of the blade has a groove in it and a chisel grind, while the other side has no groove and is basically a convex edge (meaning it rounds down to the edge, rather than having a straight bevel). The blade is traditionally forged from locally sourced iron ore smelted by Yakutian blacksmiths. The knife handle is traditionally made from birch burl and is thick and egg-shaped in cross-section. It fits the hand and can also be used wearing gloves. The birch also protects the hand from the cold effects of the knife steel in extreme cold, a common condition in Siberia during winter months. The knife sheath is traditionally made from cow tail hide.

Modern Yakutian knife and its leather sheath.

Yakutian knife with birch burr/burl handle. Left side.

Modern Yakutian knife's right (groove) side.

Whittling off stroganina with Yakutian knife.

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Wikipedia