How should I store and maintain a shirasaya katana on display?
Updated Feb 2026
Keep the blade lightly oiled with choji oil or a refined mineral oil to prevent oxidation, reapplying every four to six weeks in moderate climates and more frequently in humid environments. When handling the blade for maintenance, hold it with a soft cloth to avoid leaving fingerprints, which contain salts that accelerate corrosion. Store or display the sword horizontally on a wooden stand with the edge facing upward, as this reduces stress on the saya and prevents the edge from resting against wood over long periods. The hardwood saya itself benefits from occasional treatment with a light furniture wax to preserve its luster and protect it from drying or cracking.