----- Original Message ----- From: "Ron Nossaman" <rnossaman at cox.net> > Consider that on a rim that's essentially a plane, it's not > geometrically possible in any board that has crown along the > ribs, to *not* have crown along the grain. It's a result, not > a feature. Agreed. So maybe Udo Steingraber is on to something by custom shaping the inner rim to the profile of the board right before installation, and Dale seems to agree, that it reduces the stress that is placed upon the panel during glue-in. What does that do to the sound? No way am I taking the bait on that one. Sure is worth further experimentation, though, and I have to admit I get a bit nervous when I'm forcing my potato chip shaped panels to conform to the inner rim. > The only purpose of that model was to illustrate that > soundboard crown isn't an end buttressed arch, which I think > it did well enough. What else would you expect or wish a > larger and more complex model to show? I guess I'm not thinking about a different model but rather a different experiment. I'll get back to you when I finally pose a real question. :) Jude Reveley, RPT Absolute Piano Restoration, LLC Lowell, Massachusetts (978) 323-4545 -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080123/0e38477f/attachment.html
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