perpetually sticking keys

[Dean May]

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Good point, Mike. One other thing is the connection of the drop sticker to
the back of the key. Often there is binding there, especially if the
adjusting nut is a dowel with felt glued around the bottom. If this is the
set up you have, take all of those stickers into your shop and sand the felt
down on your disc sander so that none sticks out past the sides of the
dowell.

Dean
  -----Original Message-----
  From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On
Behalf Of Michael Spalding
  Sent: Monday, January 24, 2005 9:28 AM
  To: Pianotech
  Subject: Re: perpetually sticking keys


  Tom.

  One more thing that I don't think has been mentioned yet:  sometimes the
wire stickers can apply a forward or backward torque to the keys, depending
on the fit of the regulating nut in the mortise at the back of the key.
Sometimes the wire stickers have been bent so as to neutralize this torque,
or to exploit it by urging the keys upward.  Sometimes, in the course of
regulating lost motion, or replacing elbows, the wires can rotate, so that
the bend in the wire sticker is misaligned, forcing the key up or down, or
twisting the key sideways so that it binds on the pins.  Hard to describe,
but pretty obvious once you've experienced it.  First step in an elbow
replacement is to look for the bend and figure out how to get the wires back
in the same orientation.  If after you disconnect the sticker from the key
you find the key moves freely, and the wippen/hammer assembly returns
readily, look for a problem wit! h the sticker/key connection.

  Mike


    ----- Original Message -----
    From:
    To: pianotech@ptg.org
    Sent: 1/24/2005 7:47:22 AM
    Subject: Re: perpetually sticking keys


    Thanks to all for the great advice.  I have some things to look for now.

    I have to admit that there was nothing offered here that I hadn't heard
of before.  Yet, when I wrote, I felt like I was at a dead end.  A fellow
tech/friend once said to me, "The hardest thing about working on pianos is
remembering the stuff that I know."  (Yogi Berra couldn't have said it any
better.)

    Thanks again.  I go on Wednesday to remedy the problem.  Wish me luck.

    Tom Sivak

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