This petty is built from AS, or Aogami Super, carrying the highest wear resistance and lowest toughness of the three Blue Paper steels - edge holding here is genuinely outstanding, and the steel remains easy to sharpen despite that hardness. AS also carries the highest carbon and chromium content of the three alloys, giving it a slight edge in corrosion resistance, further reinforced with a stainless steel cladding that protects the core from shock while staying softer and more ductile than the edge itself. The cladding wears a tsuchime, or hammered, finish that improves food release and adds real visual character.
Petty knives are small, general-purpose blades that excel at a wide range of tasks, especially in-hand cutting work and small detail chores - easy to handle and genuinely responsive cutters. The oval cherry wood, or sakura, handle complements the blade in both looks and balance.
Care Instructions: AS is a reactive carbon steel at the edge. Wipe and dry the blade promptly after use and avoid leaving it in contact with acidic foods. Hand wash only. Apply a light coat of camellia oil for long-term storage.
Petty knives are small, general-purpose blades that excel at a wide range of tasks, especially in-hand cutting work and small detail chores - easy to handle and genuinely responsive cutters. The oval cherry wood, or sakura, handle complements the blade in both looks and balance.
Care Instructions: AS is a reactive carbon steel at the edge. Wipe and dry the blade promptly after use and avoid leaving it in contact with acidic foods. Hand wash only. Apply a light coat of camellia oil for long-term storage.
- Brand: Tsunehisa
- Location: Tosa, Japan
- Construction: Roll Forged, San Mai
- Edge Steel: AS Carbon Steel (Aogami Super)
- Cladding: Stainless
- Edge Grind: Double Bevel, Even
- HRC: 63
- Finish: Tsuchime
- Handle: Oval Cherry Wood
- Engraving: Laser Engraved
- Weight: 2.3 oz (68 g)
- Blade Length: 140 mm
- Total Length: 265 mm
- Spine Thickness at Heel: 2 mm
- Blade Height: 30 mm











