What care routine keeps a lacquered saya in good condition?
Updated Mar 2026
Lacquered saya - whether piano-black or matte black finish - requires a small amount of consistent attention to stay pristine on display. Avoid storing the blade sheathed for more than a few weeks without removing it, as trapped moisture between blade and saya can initiate surface rust on the steel and cause lacquer to soften or bubble from the interior. When dusting the saya, use a dry microfiber cloth rather than abrasive materials; even fine grit can scratch lacquer's glassy surface. Keep display pieces away from direct sunlight, which yellows clear-coat lacquer and fades color treatments over time. If the lacquer develops a hairline crack - typically from low-humidity environments causing the wood substrate to contract - a light application of furniture wax (not silicone-based) can seal minor surface checks. Annual inspection of the koiguchi (saya mouth) fit is also worthwhile, as a loose fit allows the blade to rattle and scratch the interior finish.