How should I store and maintain a display tanto properly?
Updated Mar 2026
For long-term display, the blade should be lightly coated with a thin application of blade oil — choji oil or a modern mineral-based equivalent — every few months depending on your local humidity. A light wipe with a clean, lint-free cloth before applying oil removes any surface oxidation before it can develop into pitting. Store the tanto horizontally or at a slight upward angle with the edge facing up, which is the traditional Japanese orientation and prevents oil from pooling unevenly along the hamon. Keep the assembly away from direct sunlight and high-humidity environments; both lacquer saya and ray skin coverings can swell, crack, or fade with prolonged exposure. Never store the blade in its saya for extended periods without periodic removal to check for trapped moisture, which is the most common cause of hidden corrosion on display blades.