How should I store and maintain a Wado Ichimonji display replica?
Updated Mar 2026
Proper storage begins with keeping the blade dry and away from humidity, which is the primary cause of surface oxidation on carbon steel. Apply a thin coat of choji oil or a food-grade mineral oil along the blade every few months - use a soft cloth or traditional nuguigami paper rather than synthetic materials that may leave residue. When displaying in a saya, ensure the fit is snug but not tight enough to trap moisture. If wall-mounted without the scabbard, store in a low-humidity environment and consider a display case with UV-filtering panels to protect both the blade and the lacquered white saya from fading over time. Avoid touching the blade surface with bare hands, as skin oils can accelerate patina development on carbon steel.