[pianotech] Piano Key Levelling

[Gerald Groot]

Right.  I see that same thing here too from time to time.  Lousy workmanship
is everywhere.  1/4" is way to much.  2mm is pushing it for me.  


-----Original Message----- 
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Blaine Hebert 
Sent: Sunday, June 21, 2009 9:06 PM 
To: pianotech at ptg.org 
Subject: [pianotech] Piano Key Levelling 

At least in our southern California area it is common to see uprights 
with what looks like almost 1/4 inch of crown, plus the keys up far too 
high and with inadequate sharp height.  Apparently someone got it into 
their heads in the 80s that pianos needed lots of "crown" and a lot of 
uprights were done that way. 

If you sight down a worn set of keys the key line is hardly a smooth 
downward curve.  There are better ways to get adequate dip in a set of 
shallow upright keys than over-raising the keys (shimming the balance 
rail comes to mind). 

B. Hebert 



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