[pianotech] (no subject)

Jon Page jonpage at comcast.net
Sun Sep 5 11:47:21 MDT 2010


>  I lowered the pitch a second time on some of the same
>notes, and it did exactly the same thing (snap, pitch drop)


That is called ratchetting. Caused by corrosion at the termination
and drag on the counter bearing felt.  There are two ways to
treat it. One is to restring. The other is to install a half-round
behind the c/b felt.
-- 

Regards,

Jon Page
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