[pianotech] Sticking key question

[Tom Servinsky]

My hunch is that the same felt supplier was supplying Pratt Whitney and other makers at the time. The worst case that I encountered was on a very nice Sohmer console. So there goes the inexpensive piano theory.
Peter Comstock, the grandson of the Comstock family who owned Pratt Whitney lived very close to me and attested that this was a problem at one point.

  ----- Original Message ----- 
  From: PAULREVENKOJONES at aol.com 
  To: pianotech at ptg.org 
  Sent: Wednesday, February 18, 2009 11:24 PM
  Subject: Re: [pianotech] Sticking key question


  Or just good intuition! :-)

  P

  In a message dated 2/18/2009 10:08:31 P.M. Central Standard Time, bill at a440piano.net writes:
    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




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