[pianotech] back rail cloth, (was of replacing keytops)

[Paul Milesi]

Ed & David,

Interesting difference of experience here.  Now I guess I get to choose
which way I go!  Does leaving the back edge unglued mean the oil board will
move around or fall out if the piano is moved?  Can that be the reason for
gluing both edges: to hold the oil board in place when there is one (which I
gather isn¹t always the case)?

Paul
-- 
Paul Milesi, RPT
Washington, DC
(202) 667-3136
E-mail:  paul at pmpiano.com
Website:  http://www.pmpiano.com



From: David Love <davidlovepianos at comcast.net>
Reply-To: <pianotech at ptg.org>
Date: Sun, 13 Dec 2009 08:50:09 -0800
To: <pianotech at ptg.org>
Subject: Re: [pianotech] back rail cloth, (was of replacing keytops)

I prefer to leave the back edge unglued.  I¹m not even sure that the key
level wouldn¹t be just slightly more stable that way.  If the cloth expands
and it¹s glued at both edges then it will be more prone to ³crowning² a bit.
Unglued at the back is definitely quieter, I find.
 
David Love
www.davidlovepianos.com
 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ed Foote
Sent: Sunday, December 13, 2009 8:40 AM
To: pianotech at ptg.org
Subject: [pianotech] back rail cloth, (was of replacing keytops)
 
Dale writes: 

  >>BTW All vintage Steinway had the back rail glued on both sides. We still
put it back that way.  There is always an underlayment of  red felt &
sometimes a shim of the  red colored oil board that Steinway has used
forever. The back of the key always stops precisely with out bounce and the
hammer line doesn't wander

 
  I am not sure about the "all" part of this.   My experience with many
Steinways from before 1920 is that the back rail cloth is usually not glued
at the back. I am speaking of untouched pianos.  I haven't noticed any less
stability with it done this way, and, it seems to lessen the noise.
Regards, 
Ed Foote RPT


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