How should I maintain a piano lacquer saya for long-term display?
Updated Mar 2026
Piano lacquer sayas are finished with multiple coats of high-gloss lacquer that give them a mirror-like reflective surface, but that finish requires some specific care to preserve over time. Avoid placing lacquered sayas in direct sunlight for extended periods, as UV exposure causes the lacquer to yellow and micro-crack at the surface. Humidity fluctuations are also a concern — storing the piece in a climate-controlled display case with stable relative humidity between 45% and 55% will prevent the hardwood substrate from expanding or contracting in ways that stress the lacquer film. For cleaning, a dry or very slightly damp microfiber cloth is ideal; avoid silicone-based furniture polishes, as they can cloud the finish over multiple applications. The blade itself should be lightly coated with choji oil or a neutral mineral oil on a soft cloth every few months to prevent surface oxidation, especially if the display environment is humid.