The Hatsukokoro Kurogane Blue #2 Petty 85mm is handcrafted in Tosa, Japan and reflects the region’s long tradition of rugged, high-performance blades. Built with a hammer-forged san mai construction, it features a Blue #2 (Aogami #2) carbon steel core that delivers excellent edge retention, easy sharpening, and a crisp, responsive feel on the stones. The soft iron cladding adds toughness and balance, while the kurouchi finish provides a rustic look and a bit of added protection against corrosion.
Care Instructions: Blue #2 is a reactive carbon steel, so wash and dry the blade after each use to avoid rust. Avoid leaving acidic foods against the blade for any length of time, and apply a light coat of camellia oil for longer-term storage. Hand wash only.
A finish sharpening before first use is recommended to bring the factory edge up to its full potential.Maker: Hatsukokoro
Location: Tosa, Japan
Construction: San Mai, Hammer Forged
Edge Steel: Blue #2
Cladding: Soft Iron
Finish: Kurouchi
HRC: 62+
Edge Grind: Even, Double Bevel, 50/50
Weight: 2.8 oz (78 g)
Blade Length: 85 mm
Total Length: 214 mm
Spine Thickness at Base: 3 mm
Blade Height: 33 mm
Handle: Octagonal Ebony
Care Instructions: Blue #2 is a reactive carbon steel, so wash and dry the blade after each use to avoid rust. Avoid leaving acidic foods against the blade for any length of time, and apply a light coat of camellia oil for longer-term storage. Hand wash only.
A finish sharpening before first use is recommended to bring the factory edge up to its full potential.
