Soundboard recrowning and rib re-arching.

[Ron Nossaman]

>     So, why not flex the panel out, add something to
> the wood to resist compression, then take out the
> props ?  

You're a little behind the curve. That was exactly what Del's 
article on epoxying soundboards is about.


>My only concern would be a loss of elasticity
> to an increase in crown. 

Loss of elasticity (increased stiffness) is entirely the point 
of doing it. It doesn't restore crown.


>CA is really, really hard! I
> IMAGINE this would favor higher frequency production,
> but that's not so bad, as it's usually the treble in
> old pianos that gets flaccid. 
> 
>      Thump

CA would likely work just fine.
Ron N