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Shimmed cracks only cosmetical?
#651742 12/31/04 08:48 AM
Joined: Mar 2004
Posts: 1,380
Stockholm, Sweden
pianistical Offline OP
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pianistical
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Joined: Mar 2004
Posts: 1,380
Stockholm, Sweden
Does one shim cracks only for cosmetical reasons or does the tone actually improve?

“There are only two important things which I took with me on my way to America, It´s been my wife Natalja and my precious Blüthner.” – Sergei Rachmaninov

1913 Blüthner model 6
1929 Blüthner model 9.
Re: Shimmed cracks only cosmetical?
#651743 12/31/04 10:22 AM
Joined: Jun 2003
Posts: 32,060
Oakland
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BDB Offline
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Oakland
If you have a crack which is buzzing, they can stop it. Otherwise, it's pretty much cosmetic.

Semipro Tech
Re: Shimmed cracks only cosmetical?
#651744 01/02/05 09:43 AM
Joined: May 2004
Posts: 2,018
Murphys, Ca
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Keith Roberts Offline
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Keith Roberts
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Joined: May 2004
Posts: 2,018
Murphys, Ca
If when you shim the crack, the board is dried to 4 or 5% humidity and you artificially crown the board while gluing, when done the board swells up and the pressure results in a "compression crown". This does improve the sound in most cases but is a lot more work than stopping a buzz.

kpiano

Keith Roberts
Keith's Piano Service
Hathaway Pines,Ca

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