How should I store and maintain a blue blade hamidashi?
Updated Mar 2026
Storage environment matters more than most collectors initially expect. High-manganese steel is generally more corrosion-resistant than traditional high-carbon steel, but humidity remains a concern — especially for blades displayed without their saya. Store the tanto horizontally or at a slight downward angle (edge up) inside its scabbard when not on display. Apply a thin coat of choji oil or camellia oil to the blade every two to three months, and always use a soft, lint-free cloth. Avoid touching the blade surface with bare hands, as skin oils accelerate surface oxidation. For lacquer saya, occasional light buffing with a dry cloth is sufficient — avoid moisture and alcohol-based cleaners near the lacquer surface.