Laminated Soundboard Panels

[Delwin D Fandrich]

The long-term load test sounds interesting but won't the load have to go in
for more ice cream from time to time? It won't be a permanent load....

Del

> -----Original Message-----
> From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On
> Behalf Of Ron Nossaman
> Sent: February 04, 2004 9:40 AM
> To: davidlovepianos@earthlink.net; Pianotech
> Subject: Re: Laminated Soundboard Panels
>
>
>
> >I have noticed that too, Joe.  But what are we going to do.  If we build
> >laminated boards, they will have to be 100% rib crowned, no???:-)
> >
> >David Love
>
>
> Hopefully, but...
>
> A year or so ago, I glued a piece of 5mm piano crate sheathing to an 18mm
> thick X 25mm wide X 800mm long flat pine stick, pressed into a
> 6mm crown. A
> 220 pound weight I happened to have standing around handy wasn't
> enough to
> push it flat at the time, and still isn't. I guess I should do a
> long term
> load test on it just for the educational value, but I found it
> interesting
> that the assembly got that stiff with that little structure. A long term
> load test will give that highly inferior Titebond a chance to creep away
> with the crown too, as an additional test.
>
> Ron N
>