Hello, I am the owner of a Chinese "Nieer" upright piano; after all the years that I have owned it and after all the problems that have arisen, I have decided to restore it. But a problem has arisen that I don't know what to do about...
I was dismantling the bass strings because I need to repaint the cast iron and change the hammer felt, but while loosening the first string, the 90Ā° curved part that enters the tuning pin hole breaks.
Then I dismantle the next one, acting with more caution, but the same thing happens. However, this did not happen with the high treble strings; now I don't know if I am making a mistake in the dismantling, but I noticed something: that is, during the loosening of the string, before the coiled part of the string wrapped around the tuning pin breaks, it bends towards the inside of the cast iron and then breaks... In any case, the strings are quite oxidized, but I don't know if it is on the inside or if it is just an external patina on the string. I am asking for advice on what I can do and, in case I have to replace them, where I can find the diameter. Thank you
