So let me get this straight. You are claiming that the ability to calculate the amount of compression that form in a given panel that is subjected to X amount of downwards pressure is a matter of propriety information ? Strikes me as this is a general information issue. Designing rib scales themselves is a different matter and I can certainly see why someone would want to protect their own design methods. Just as I see and respect using registered trademarks without permissions, respecting patent rights... and the rest of it. RicB The tradition of sharing information in this trade is a wonderful one and I have certainly benefited and tried to contribute to others in that tradition. Nevertheless, there are certain things that remain proprietary for a number reasons: Out of respect to those who have shared things in confidence, having labored myself for countless hours in development, and because much of the information is an ongoing work in progress (to name a few), I'm just not quite ready to hand it over. The basic approach to calculating RC&S deflections has been discussed on the list. The specific applications for that information is a separate matter. That being said, the issue of predictability, control and preculated rates of deflection is not new and should be part of any serious attempt at design. David Love davidlovepianos at comcast.net www.davidlovepianos.com ooh Ric, You're touching on trade secret territory here. You might just have to divulge your Credit card number to get answers. The Internet is a free for all but unfortunately not all for free. AF
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