Soundboards: Thickness and Area

[Crashvalve@aol.com]

---------------------- multipart/alternative attachment

In a message dated 10/17/03 10:51:55 PM, Erwinspiano@aol.com writes:


>=20
> If you took out the old boards in 5 Steinways of any give model you'd find=
=20
> some way thicker or thinner than the others but with a general range or=20
> parameter. I've measured a 70's CD S&S B with a soundboard max. thickness=20=
of .310=20
> in the middle as S&S & other are generally thinned=A0around the edges for=20
> flexibility (diaphramized as S&S says)=A0=A0That would be considered thin=20=
for a B. On=20
> the other hand I've seem them as thick as .375 ish. The thin one sounded=20
> totally awesome & I was surprised it wasn't a "thin" sounding piano. In my=
 work=20
> I'd be using Sitka panels=A0& =A0opt for something about .340 to.360. For=20=
smaller=20
> models thinner is fine, .300 to .325ish. By the way You own an A I'm told=
=A0&=20
> I've found it common for them to be .350 ish. Ds & Mason BBs=A0can be as t=
hick as=20
> .400. Not sure this more than incidental trivia but you asked.
>=20
>  =A0 Regards--Dale Erwin
>=20
>  =A0
>=20
>=20

Dale,
have you ever tried to measure board thickness on a board in place ? I expec=
t=20
it could be easily and very accurately done with a depth mike whose spindle=20
is cut down a LOT, but this requires drilling a hole in the board.
Regards,
Glenn Coleman

---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/63/f5/64/b5/attachment.htm

---------------------- multipart/alternative attachment--