Soundboard Duplication

[Richard Moody]

Wasn't  it Mason and Hamlin that had the demo of a tuning fork
stuck into a piece of soundboard stock that could be sounded when
it was flat and sounded again when it was arched (bent)   When
bent or arched the tuning fork sounded much louder.
     This is one you have to see to believe, or in this case hear
to believe. It is very impressive but since wood in the model is
bent in the opposite direction that a soundboard is "crowned"  I
wonder how much this has effect as far as pianos are
rned.      ---rm


----- Original Message -----
From: <Erwinspiano@aol.com>
To: <pianotech@ptg.org>
Sent: Sunday, December 15, 2002 10:40 AM
Subject: Re: Soundboard Duplication


> In a message dated 12/15/2002 12:27:07 AM Pacific Standard Time,
> mcpiano@globetrotter.net writes:
>
> > Marcel Carey, RPT
> > Sherbrooke, QC
> >
> > ps: I just finished crowning the board for my M&H A. I find I
have a
> > little bit too much crown for my taste. I'll let you know how
it
> > sounds when finished.
> >
>
>          Marcel
>          Don't worry about it. Mason A s had huge bellys, so
much so that the
> bridge pins sometimes will be right up against the central plate
strut until
> its compressed by the strings. I think they had a 50ft. crown in
mind in the
> middle of the board.
>      Of course some of your alarm could be that the board is
just puffed up
> from moisture right now.
>               Dale Erwin
>