[pianotech] Pinblock Separation

[tnrwim at aol.com]

Wes

Unless you do something, the crack will get wider and wider, and eventually the piano will collapse.  But it can be fixed, but it might not be worth it. This is how you repair it.
1. release the tension on the whole piano
2. remove the plate screws along the top
3. drill a hole all the way to the back of the piano in the screw holes.
4. using 4 or 5 large C clamps, bring the front and the back together
5. just before the two sides meet, squirt a generous amount of glue in the crack, and then bring the two sides together. (wipe off the excess glue)
6. with the clamps still in place, put stove bolts through the holes, and tighten them down, with large washers between the nut and the back of the piano. 
(For a more cosmetic look, you can counter sink the washers and nuts, and cut off the bolts flush with the back of the piano. You can even go so far as to patch the holes with wood putty and color it to match the wood.)
7. slowly release the C clamps
8. tune the piano. 

Good luck

Wim 


 



-----Original Message-----
From: Wesley Hardman <hardmanwesley84 at gmail.com>
To: pianotech <pianotech at ptg.org>
Sent: Thu, Jan 10, 2013 10:45 pm
Subject: [pianotech] Pinblock Separation



The piano is a Kimball studio.  The pinblock has separated from the frame with a huge, visible crack from one end to the other. A highly reputable manufacturer says this separation will not affect the ability of the piano to hold a tune and is only cosmetic and could be filled with a filler of some kind and then sanded down.  What is your take on this?
 
Wesley Hardman, RPT
Scottsboro, Alabama

 
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