Crowning methods, was soundboards.

[James Grebe]

thanks
Terry
James Grebe
Piano-Forte Tuning & Repair
Creator of Handsome Hardwood Caster Cups, piano benches, writing instruments
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----- Original Message ----- 
From: "Terry" <terry@farrellpiano.com>
To: "Pianotech" <pianotech@ptg.org>
Sent: Friday, January 21, 2005 8:09 AM
Subject: Re: Crowning methods, was soundboards.


> No, both the form and the function of the diaphramatic soundboard panel
> design differs from the carved violin top. The violin is carved on both
> sides. The diaphramatic soundboard panel is 
> planed/sanded/carved-if-you-will
> on the top only. The purpose of the diaphramatic soundboard panel - that 
> is,
> thinning the panel at the edges - is to give the soundboard increased
> flexibility near its perimeter (the soundboard I build have untapered
> panels - perimeter flexibility is controlled by rib shape). I don't know
> much at all about violin building theory, but I think it is a fair bet 
> that
> perimeter flexibility is not why the violin top is carved (although
> perimeter flexibility may well be one factor taken into consideration 
> during
> the carving process...)
>
> I think it is fair to say though, that these are two different beasts.
>
> Terry Farrell
>
>
>> Isn't that what the diapframatic board is supposed to be?
>> James Grebe
>
>> >
>> >> Has anyone heard of anyone experimenting with a milled (carved, 
>> >> shaped,
>> >> sanded) board—similar to the way violin tops are made—as an 
>> >> alternative
>> >> to
>> >> deforming or reshaping anything--maybe even with a real high (or low,
>> > upside
>> >> down) crown like a violin?
>
>
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