How should I store a wood saya katana to prevent damage?
Updated Mar 2026
Natural wood saya are sensitive to humidity fluctuation, which can cause the wood to expand, contract, or crack over time. Store the piece horizontally in a stable environment - ideally 45-55% relative humidity - away from direct sunlight and heating vents. Apply a light coat of camellia oil or choji oil to the blade before long-term storage to prevent surface oxidation, and inspect the saya interior periodically for any debris that could scratch the blade during removal. If displaying vertically, store with the edge facing upward (ha-ura) to avoid oil from the blade pooling against the saya's interior walls. Avoid airtight cases without a moisture-control packet, as trapped humidity accelerates lacquer lift on painted saya surfaces.