<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">In a message dated 1/20/2002 8:20:04 AM Pacific Standard Time, davidlovepianos@earthlink.net writes:<BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:<B>Re: Soundboard Pre-Stressing/Downbearing, was: Baldwin accu-hitch pins </B><BR>
Date:1/20/2002 8:20:04 AM Pacific Standard Time<BR>
From:<A HREF="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.net</A><BR>
Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A><BR>
To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A><BR>
<I>Sent from the Internet </I><BR>
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prestress the board, cut your notches in a few key areas, remove everything and plane down the bridge, mark, drill, notch, etc... On a new board some do this with a dry fit, before the glue in the board itself. That way the planing, drilling, pinning and notching can be done outside the piano where there is more comfortable access.</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0"></BLOCKQUOTE><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><>>>>>>The dry fit procedure intruduces some degree of variance as the board isn't really held tightly to its final gluing surface and the rib ends can still move. However I do it this way and have learned to mitigate the flux factor. I'm getting to old to crawl up in the belly of a piano on my knees to notch a bridge for a hour or so. the bench is easier.<BR>
Dale Erwin</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">David Love</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">----- Original Message ----- <BR>
<B>From:</B> <A HREF="mailto:mfarrel2@tampabay.rr.com">Farrell</A> <BR>
<B>To:</B> <A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> <BR>
<B>Sent:</B> January 20, 2002 6:34 AM<BR>
<B>Subject:</B> Re: Soundboard Pre-Stressing/Downbearing, was: Baldwin accu-hitch pins<BR>
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