Soundboard installation with hide glue

[Farrell]

I think the "perfect fit" theory is a product of the (the soundboard is an) 
"arched structure" theory. If the ribs on the soundboard function like an 
engineering arch, then you might have some reasoning to go for that "perfect 
fit". Although, even then, if your panel/rim glue joint is good, you still 
wouldn't need a perfect fit. But the soundboard is not an engineering arch, 
so the perfect fit won't do anything for you.

Terry Farrell

----- Original Message -----
> You make me feel that common sense is just as precious as mystics (or
> theories, which in a certain sense is exactly the same).
> Thanks for your valued input.
> You really help me ascertaining where I'm doing a good job and where I'm
> just dreaming.
>
> Stéphane Collin.
>
> -----Original Message-----
>> How long do I have to do the board fitting in the piano before it swells
>> again ?  I suppose that any fitting done when the board changes
>> dimensions again is of no value.  Or is this overkill ?
>
> It's overkill. The soundboard has to be trimmed enough to go
> into the piano, but there's no reason it needs to exactly fit
> the rim at it's edge. I do a rough fit of the panel dried to
> 6%MC before I glue the ribs on, but am not too concerned what
> it is, if it's somewhere near, when I install the board.
>
> Ron N
>
>