How should I store and maintain a decorative hamidashi tanto?
Updated Mar 2026
For long-term display and preservation, the most important factors are humidity control, surface protection, and proper support. Keep the tanto in an environment where relative humidity stays between 40–60%; excessive moisture encourages surface oxidation on carbon-based steels and can warp wooden saya over time. Apply a very light coat of choji oil or mineral oil to the blade surface every few months using a soft, lint-free cloth — this is especially important for high manganese steel blades. The tsuba and fittings can be gently wiped with a dry microfiber cloth to remove fingerprint oils. When displaying horizontally, use a dedicated tanto stand that supports both the saya and the blade evenly to avoid stress on the habaki fitting over time.