It's the same thing that caused the soundboard panel to fail in the first place. It's what I wrote about in a series of articles in the PT Journal back in the 1990s. The wood technology involved is available in numerous reference works that are readily available--one of the best of these, "The Wood Handbook," as a free download from the U.S. Forest Products Lab. It's been the subject by several contributors as part of numerous threads and topics on this forum. It's been the subject of numerous conference and convention classes by several different instructors including, among others, myself and Ron N. It will be part of at least one technical presentation at the coming PTG Annual Convention in Bellingham, Washington. I'm not sure just how much more can be done to make this phenomena understood. Regards, ddf Delwin D Fandrich Piano Design & Fabrication 6939 Foothill Court SW, Olympia, Washington 98512 USA Phone 360.515.0119 Cell 360.388.6525 del at fandrichpiano.com ddfandrich at gmail.com -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Joe Goss Sent: Monday, May 28, 2012 9:30 AM To: pianotech at ptg.org Subject: Re: [pianotech] re-fabricating a failed soundboard Then what causes the panel to fail? Joe Goss BSMusEd MMusEd RPT imatunr at srvinet.com www.mothergoosetools.com ----- Original Message ----- From: "Ron Nossaman" <rnossaman at cox.net> To: <pianotech at ptg.org> Sent: Monday, May 28, 2012 9:08 AM Subject: Re: [pianotech] re-fabricating a failed soundboard > On 5/28/2012 9:09 AM, Joe Goss wrote: >> Humm, >> Is it the board that has lost compression or the ribs. >> Joe Goss BSMusEd MMusEd RPT > > It's the panel. > Ron N > >
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