Del, Thank you for reminding me of your articles. I had been thinking, if you can flatten a warped piano lid or table top by putting it on a lawn on a sunny day, why not warp a soundboard by steaming the top? The reason why not, as I understand it, is that a properly crowned soundboard holds the wood fibers in compression. It is not sufficient to simply have an arched soundboard. Anyway, I'm not sure it would be possible to put an arch in a soundboard that was restrained by ribs and a piano rim. Kevin Message text written by INTERNET:pianotech@ptg.org >Kevin, This is a simple question with a complex answer. I just wrote a three-part article recently published in the Journal on the subject. Somewhere in there should be the information you're after. Del ---------------------------------- Kevin R. Aldrich wrote: > Dear List: > > Is there a way to restore crown to an old soundboard by applying heat and > moisture in some way? Any information would be greatly appreciated. > > Kevin Aldrich > Aldrich Pianos > Troy, NY <
This PTG archive page provided courtesy of Moy Piano Service, LLC