Fanned ribs (was Soundboard grain angle)

[Delwin D Fandrich]

----- Original Message -----
From: "Phillip L Ford" <fordpiano@lycos.com>
To: <pianotech@ptg.org>
Sent: December 06, 2001 3:57 PM
Subject: Fanned ribs (was Soundboard grain angle)


> >
> Ron,
> Do your ribs fan out from a point on the bent side, like the ones shown on
the sketch
> sent out by Del a couple of days ago?  Why do you feel you get better
results with a
> fan arrangement rather than parallel ribs, varying their spacing and
properties?
>
> Phil F
>

Keep in mind, this is a sketch only. It is not a final design. The ribs in
this sketch do converge to a point off to the treble side someplace. They
may not in the final design. There is nothing magical about this--that is,
whether they converge or not--it is simply one more tool to use in tailoring
a soundboard for the specific response desired.

Del