This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment _____ 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 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/2d/24/34/74/attachment.htm ---------------------- multipart/alternative attachment--
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