<DIV>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...</DIV> <DIV> </DIV> <DIV>Best regards,</DIV> <DIV>Clyde Allen</DIV> <DIV>PTG Assoc.</DIV> <DIV>Silver Spring, MD<BR><BR><B><I>Ron Nossaman <rnossaman@cox.net></I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"><BR>>I've begun to notice and in your post below you mention "compression <BR>>crowned" boards. Could you tell me what that is and what is/are the <BR>>alternative(s)? Thank!<BR><BR><BR>Hi Clyde,<BR>Compression crowning refers to the method of forming crown by gluing a <BR>severely dried panel to flat ribs and letting the panel expand as it <BR>re-hydrates, bending the ribs and forming crown. In a compression crowned <BR>board, the ribs resist crown, and destructive levels of compression are <BR>present in the panel. A better, more structurally dependable and <BR>predictable construction method is to machine a crown in the ribs, not dry <BR>the panel down nearly as much, and let the ribs act as supporting <BR>structural beams without depending on an over compressed panel to support <BR>crown and string bearing load.<BR><BR>Soundboards have been discussed more often, in greater detail, at greater <BR>length, and from more directions, and to less general effect than any other <BR>subject in the history of this list with the possible exception of tuning <BR>temperaments. Mark off at least three days of your life, pull up the <BR>archives, and read. Pay attention to who says what, who makes sense, what <BR>makes sense, and think it through.<BR><BR><BR>Ron N<BR><BR>_______________________________________________<BR>pianotech list info: https://www.moypiano.com/resources/#archives<BR></BLOCKQUOTE><p>__________________________________________________<br>Do You Yahoo!?<br>Tired of spam? Yahoo! Mail has the best spam protection around <br>http://mail.yahoo.com