---------------------- multipart/alternative attachment Thanks to Terry Farrell, Ron N, and RicB for your replies. It is a blessing to have experienced people willing to shed light on the various issues that come up... Best regards, Clyde Allen PTG Assoc. Silver Spring, MD Ron Nossaman <rnossaman@cox.net> wrote: >I've begun to notice and in your post below you mention "compression >crowned" boards. Could you tell me what that is and what is/are the >alternative(s)? Thank! Hi Clyde, Compression crowning refers to the method of forming crown by gluing a severely dried panel to flat ribs and letting the panel expand as it re-hydrates, bending the ribs and forming crown. In a compression crowned board, the ribs resist crown, and destructive levels of compression are present in the panel. A better, more structurally dependable and predictable construction method is to machine a crown in the ribs, not dry the panel down nearly as much, and let the ribs act as supporting structural beams without depending on an over compressed panel to support crown and string bearing load. Soundboards have been discussed more often, in greater detail, at greater length, and from more directions, and to less general effect than any other subject in the history of this list with the possible exception of tuning temperaments. Mark off at least three days of your life, pull up the archives, and read. Pay attention to who says what, who makes sense, what makes sense, and think it through. Ron N _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/e5/95/ee/cc/attachment.htm ---------------------- multipart/alternative attachment--
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