I believe a problem with too much glue and the damper lifter felt...wicking to far into the felt, has also been a theory... David Ilvedson, RPT Pacifica, CA 94044 Original message From: "William Monroe" To: pianotech at ptg.org Received: 2/18/2009 8:07:38 PM Subject: Re: [pianotech] Sticking key question I've had this happen too. Though I don't think I can answer your question definitively, Paul. And, perhaps it wasn't chemical (I've no way of knowing for sure) but the spoons were like sandpaper and the felt was eaten through. Kimball or Wurlitzer come to mind, but that may just be a predisposition on my part. ;-] William R. Monroe On Wed, Feb 18, 2009 at 9:48 PM, <PAULREVENKOJONES at aol.com> wrote: Wow, Tom, I've never heard of that, and I'm old. Are there particular pianos in which this is the case? Or a particular time period? Or a particular felt maker? Was it true for all sizes of upright pianos? Inquiring (and old) minds want to know... Paul Matthew, To add to Dean's thoughts, there is a well documented problem where the dye of the felt actually caused the spoon metal to corrode excessively.. The result causes the plating of the spoon to be completely corroded away making the spoon very much like a sandpaper paddle cutting away at the felt. Thus a large gouge would occur in the felt causing the spoon to get caught in the formed grove. SNIP Tom Servinsky -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090218/a63fd7f1/attachment-0001.html>
This PTG archive page provided courtesy of Moy Piano Service, LLC