Let me restate the question

[Delwin D Fandrich]

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From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of
Erwinspiano@aol.com
Sent: February 06, 2006 7:45 AM
To: pianotech@ptg.org
Subject: Re: Let me restate the question



  Indeed.. I mean.... cannot achieve crown support this way.  I Might be wrong
but probably not for a very long ....long time.  Remember that , well, at least
the way I calculate downbearing, there is at least 1000 to 1400 lbs pressure on
the board 24 /7.
  I like wood.  when we stop using wood .  I'll be doing something else.  You
know?
   Dale 
 

Of course you can. Why not? What would be the limitation? Bent laminations can
be made to do most anything you want them to do. You can make boats -- big boats
-- out of them. Or chairs. Even load-bearing architectural structures. Railroad
bridge spans. Almost anything.
 
I've been using curved, laminated ribs for something over 20 years and I see no
evidence of any of them collapsing yet. What would be the difference (in
load-carrying capability) between curved, laminated ribs and a single laminated
panel pressed into a curve.
 
So, yes, soundboard panels can be pressed this way. And they will still be wood.
And they will be adequately strong enough to support whatever downbearing load
you want to put on them. Even if it is an unrealistic and excessive 1,000 to
1,400 lbs. 
 
As to how they would sound: well, now, that is another question. And we won't
know that until somebody actually does the R&D and finds out.
 
Del
 

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