When I was in school at the Piano Hospital in Vancouver, Wa, I was given a piece of soapstone. I have no idea where to obtain this stuff, but I am not really worried, because it never seems to wear out, but I don't know where to tell anybody else to get any. But I have used it to lubricate nuckles, along with other such surfaces, it has always worked, and they have never begun to squeak again. I saw a piano about a month ago, on which I used it on the nuckles in 1990, and they are still not squeaking.
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