Steinway B Scale Conversion

[Bob Hull]

Del,

It looks like the grain angle on your board is really
different than the original.  If it is, how do you
determine what grain angle to use?

Why do you float the end of the soundboard (isn't this
 for more flexibility?) and then you turn around and
add a veneer to stiffen it and add impedence?  These
seem antithetical.  What am I misunderstanding?

Bob Hull

--- Delwin D Fandrich <fandrich at pianobuilders.com>
wrote:

>  
> 
> 
>   _____  
> 
> From: pianotech-bounces at ptg.org
> [mailto:pianotech-bounces at ptg.org] On Behalf Of
> Erwinspiano at aol.com
> Sent: March 30, 2007 10:06 PM
> To: pianotech at ptg.org
> Subject: Steinway B Scale Conversion
> 
> 
> 
>  My Colleagues
>  ...
>     My thanks to all bellyheads who have shared the
> bizzarro ideas over the
> years. These things work & pan out in real life.  If
> any one would like to come
> & play it give a call.
>   Dale Erwin
>  
> 
>  
> Yes, they do, don't they. Below (and attached at
> higher resolution) is a picture
> of another approach to the same problem. This one
> uses seven bi-chords on the
> transition bridge (which is what I normally
> recommend for these scales). 
>  
> This piano also got a floating bass section. The
> maple veneer on the top and
> bottom of the soundboard is for stiffness (i.e.,
> impedance) control. This also
> works and pans out in real life.
>  
> Regards,
>  
> Del
>  
>  
> 
> 



 
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