Soundboard Duplication

[Farrell]

Yes, it was M&H. My recollection is that the model had positive crown. Maybe your model had seen too many years? Too much loading? Not enough rib strength? Sounds like you had a collapsed model!

Terry Farrell
  
----- Original Message ----- 
From: "Richard Moody" <remoody@midstatesd.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Monday, December 16, 2002 2:42 AM
Subject: Re: Soundboard Duplication


> 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
> >
> 
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