Category Archives: Repair

Key bushing repair

Pianos have soft parts that wear out over time. These are usually felt: hammers, key bushings, and many other areas where the natural lanolin in wool felt reduces friction and noise between dissimilar materials. On this grand piano, with the keys pushed down, it was easy to wiggle them side-to-side. This is how you test […]

Humidity Damage

This is some of the damage I’ve seen caused by extreme high or low humidity (outside the safe range of about 40% to 60%), and/or by cycling between extremes. Controlling humidity can only prevent damage; it can’t repair it.