[pianotech] Easing key balance pin hole.

[tnrwim at aol.com]

Hi list
s there a difference easing through the top of the key balance pin hole and 
hrough the bottom of the key? Have forgotten why?
im


Lim

The correct way to ease the balance rail hole is with a Key Balance Hole Burnisher, (Schaff part # 43, page 43), inserted through the top of the key. The angled burnisher opens the bottom of the hole, but keeps the V shape of the hole inside the key, to allow the key to rotate on the balance rail pin. 

If you open the hole from the bottom of the key, you risk making the hole too big, which will result in a pulley key. (the key moving front to back on the balance rail hole)

Wim





-----Original Message-----
From: limhseng <limhseng at gmail.com>
To: pianotech <pianotech at ptg.org>
Sent: Fri, Sep 3, 2010 8:35 pm
Subject: [pianotech] Easing key balance pin hole.


Hi list
s there a difference easing through the top of the key balance pin hole and 
hrough the bottom of the key? Have forgotten why?
im
Sent from my BlackBerry Wireless Handheld 
owered by Gee! from StarHub

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100904/12595cba/attachment.htm>