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#651742 - 12/31/04 07:48 AM Shimmed cracks only cosmetical?
pianistical Offline
1000 Post Club Member

Registered: 03/13/04
Posts: 1377
Loc: Stockholm, Sweden
Does one shim cracks only for cosmetical reasons or does the tone actually improve?
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“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.
1955 Steingraeber upright.

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#651743 - 12/31/04 09:22 AM Re: Shimmed cracks only cosmetical?
BDB Online   content
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 21427
Loc: Oakland
If you have a crack which is buzzing, they can stop it. Otherwise, it's pretty much cosmetic.
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#651744 - 01/02/05 08:43 AM Re: Shimmed cracks only cosmetical?
Keith Roberts Offline
1000 Post Club Member

Registered: 05/04/04
Posts: 1984
Loc: 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
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