[pianotech] Key Bushing Job

Paul T Williams pwilliams4 at unlnotes.unl.edu
Sat Apr 4 06:59:50 PDT 2009


Good one, Ryan,

I forgot that one that Steve taught me too many years ago to admit!

Paul




Ryan Sowers <tunerryan at gmail.com> 
Sent by: pianotech-bounces at ptg.org
04/03/2009 07:56 PM
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Re: [pianotech] Key Bushing Job








---- Original Message -----
From: "Steven Hopp" <hoppsmusic at hotmail.com>
To: pianotech at ptg.org
Sent: Friday, April 3, 2009 11:46:05 AM GMT -06:00 US/Canada Central
Subject: [pianotech] Key Bushing Job

Hello,
 
Just left a customers piano that would benefit from new key bushings.  
However, on the way to lunch I thought the ones i looked at did not appear 
to be overly worn yet they are loose and make some side to side noise.  My 
question is:  is there anyway to swell the bushing and use an appropriate 
sized caul instead of completely rebushing the entire set?  Just wondering 
out loud so please don't beat me up. :)
 
Also the front rail bushings have black lines where the key rides on the 
pin.  What is the black stuff?
 
Thanks,
 
 
Steven J. Hopp
PianoWorks Studio
Midland TX.


I've had some success with 50/50 water/denatured alcohol with a tiny bit 
of Ballistol in it. This was on a fairly new piano so the felt was in 
pretty good shape. I use the double shoulder cauls from Bill Spurlock. It 
allows you to give a tap with a hammer and compress the wood while 
compressing the felt into the mortise at the same time. I'm not sure that 
anything special is in the Profelt.

Steve Brady also taught me a trick: If the felt is in pretty good shape 
you can stick a single voicing needle in the felt right where the mark 
from the pin is. This can actually snug things up quite well and it seems 
to last quite a while. 

-- 
Ryan Sowers, RPT
Puget Sound Chapter
Olympia, WA
www.pianova.net
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