How should I maintain a Shusui replica for long-term display?
Updated Feb 2026
Carbon steel is more reactive than stainless steel, so a simple maintenance routine goes a long way. Every two to three months, wipe the blade with a soft microfiber cloth to remove dust and fingerprint oils, then apply a thin coat of choji oil or food-grade mineral oil using a flannel pad. Pay extra attention to the etched hamon area, where moisture can settle in the textured surface. Store the sword horizontally on a proper katana stand with the cutting edge facing upward to avoid pressure on the edge. Keep it away from bathrooms, kitchens, or any space with high humidity. If you notice any light surface oxidation, a gentle pass with a rust eraser followed by re-oiling will restore the finish.