Soundboard stiffening

[Delwin D Fandrich]

> -----Original Message-----
> From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On
> Behalf Of Richard Brekne
> Sent: February 04, 2004 10:17 AM
> To: Pianotech
> Subject: Re: Soundboard stiffening
>
>
> >
> >Please go back and read what I wrote about Baldwin's crowning
> technique. And
> >then put what I wrote above in its proper context.
> >
> >Del
> >
> >
> I think I understood well enough both what you said and the context.

Apparently you did not. I originally said that Baldwin used a combination of
light rib crown and light compression-crowning to achieve their final crown.
It exhibits some of the characteristics of each.

> It would seems to me that if  ribs
> did nothing to support crown until  they were flat.... indeed aid in the
> effort to flatten the panel... then incremental increase in panel
> stiffness for increase in downbearing would not be possible.. or what ?


Or what, indeed -- why must the world be either/or, neither/nor?

I don't know how gradual or abrupt the transition was. I wasn't testing for
that. These were just observations made along the way. Personally, I have no
trouble at all understanding why the transition region was incremental.

Del