How should I store and maintain these display pieces long-term?
Updated Mar 2026
The most important habit is keeping moisture away from the blade. Even 1045 carbon steel will develop surface oxidation in humid environments, so storing the sword in a climate-controlled room is preferable to garages, basements, or spaces with seasonal humidity swings. A light application of choji oil or mineral oil to the blade surface every few months creates a protective barrier without affecting the finish. Keep the sword in its saya when not actively displaying it, as the lacquered wood provides a degree of environmental buffering. Avoid touching the blade directly — skin oils are mildly acidic and will leave prints that, over time, can etch the surface. A soft cotton cloth for handling and wiping is all the tooling you need.