Curve on Bridge Bottom

[Isaac OLEG SIMANOT]

HI !

I confirm, either on Hamburg and U.S. The amasing is how good theses
soundboards can be after many years.

I did not believe at first that they are compression crowned, mostly because
I hear so much noise against this method.

Regards.

Isaac OLEG


> -----Message d'origine-----
> De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la part
> de John Delacour
> Envoye : vendredi 10 mai 2002 09:00
> A : pianotech@ptg.org
> Objet : Re: Curve on Bridge Bottom
>
>
> At 11:33 am -0500 9/5/02, Ron Nossaman wrote:
> | Steinway soundboards are compression crowned,
> | by gluing flat ribs to thoroughly dried down panels and letting the re
> | hydrating panel bend the ribs as it expands.
>
> I find it very hard to believe that Steinway do not plane an arc
> on the upper side of the ribs before gluing up.  Are you sure
> this is their practice?
>
> JD
>
>
>