Hi Arlie, Either loosening or tightening is possible without some type of locking method. Methods I've have seen or used: Slot in the wood to capture square nut lock nut or jam nut felt punching under adjusting nut leather nut Punching under pedal ( necessary for noise reduction and also helps to keep the setting ) CA on the nut, just a drop will do yah. Joe Goss RPT Mother Goose Tools imatunr at srvinet.com www.mothergoosetools.com ----- Original Message ----- From: "Arlie Rauch" <adarpub at midrivers.com> To: <pianotech at ptg.org> Sent: Saturday, March 25, 2006 4:35 PM Subject: Laws of physics in reverse? > A customer called me the other day who has an old upright piano, a > fairly nice one. But it has one unusual feature--either that or she > is not telling me everything. The nut which adjusts the damper pedal > tightens itself over time to the degree that the dampers stand off > from the strings, and the sound just rings. > > Is this really possible? She claims no one tampers with it. But > every visit I adjust it so it works properly, and my next visit it is > screwed down so tight that the dampers are off the strings again. > > Anyone else experience this? Can you explain it? I can understand a > nut loosening, but tightening by itself baffles me. > > Anyway, it's time to loosen the nut again! > > Arlie Rauch > Glendive, MT
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