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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=Erwinspiano@aol.com
href="mailto:Erwinspiano@aol.com">Erwinspiano@aol.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> December 22, 2002 6:34 =
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Soundboard =
Clamping for
Downbearing</DIV>
<DIV><BR></DIV><FONT face=arial,helvetica><FONT lang=0 =
face="Times New Roman"
size=2 FAMILY="SERIF"> </FONT><FONT lang=0
style="BACKGROUND-COLOR: #ffffff" face="Times New Roman" =
color=#000000 size=3
FAMILY="SERIF"> Del writes
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"
TYPE="CITE"></FONT><FONT lang=0 style="BACKGROUND-COLOR: =
#ffffff" face=Arial
color=#000000 size=2 FAMILY="SANSSERIF"><BR><BR>The wood =
moisture has to be
within bounds. We forget the importance of wood<BR>moisture content =
on the
adhesive when we blithely talk about taking wood<BR>down to 4% for
compression-crowning. Most adhesives work best on wood<BR>between
approximately 7% and 9% MC. Below 6% the wood starts =
absorbing<BR>enough
solvent -- usually water -- from the adhesive to start affecting
the<BR>adhesive bond. At 4% things get really
dicey.<BR>.</BLOCKQUOTE></FONT><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face=Arial color=#000000 size=2 FAMILY="SANSSERIF">
<DIV><BR></FONT><FONT lang=0 style="BACKGROUND-COLOR: #ffffff" =
face=Arial
color=#000000 size=3 FAMILY="SANSSERIF"><BR></FONT><FONT =
lang=0
style="BACKGROUND-COLOR: #ffffff" face="Times New Roman" =
color=#000000 size=3
=
FAMILY="SERIF"> &n=
bsp;
Hi Del<BR>Are you referring to all glues under the aformentioned dry
conditions. Out of curiosity what is your glue of choice for rib bond =
and
board to rim joint in your rebellying systemology ? Am I understanding =
you to
say that this heated press is what you are using? or not?</FONT><FONT =
lang=0
style="BACKGROUND-COLOR: #ffffff" face=Arial color=#000000 =
size=3
=
FAMILY="SANSSERIF"><BR> =
&=
nbsp; &n=
bsp;
Dale Erwin</FONT></FONT></DIV></BLOCKQUOTE>
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face=Arial color=#000000 size=2 =
FAMILY="SANSSERIF"></FONT></FONT> </DIV>
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face=Arial color=#000000 size=2 FAMILY="SANSSERIF"><FONT =
face="Comic Sans MS"
color=#000080 size=3>1) All water-solvent =
adhesives. And that
is just about all woodworking adhesives.</FONT></FONT></FONT></DIV>
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face=Arial color=#000000 size=2 FAMILY="SANSSERIF"><FONT =
face="Comic Sans MS"
color=#000080 size=3>2) We use Titebond II or MPA =
II or some
similar adhesive.</FONT></FONT></FONT></DIV>
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face=Arial color=#000000 size=2 FAMILY="SANSSERIF"><FONT =
face="Comic Sans MS"
color=#000080 size=3>3) Good grief no! That stuff =
is
expensive. We glue up at room temperature like most everybody else. =
Heated
presses are for factories. Super-heated presses are for factories that =
were
designed to put together 60 to 65 pianos a day that are cranked up to =
produce
120 to 130 units per day.</FONT></FONT></FONT></DIV>
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face=Arial color=#000000 size=2 FAMILY="SANSSERIF"><FONT =
face="Comic Sans MS"
color=#000080 size=3></FONT></FONT></FONT> </DIV>
<DIV><FONT face=arial,helvetica><FONT lang=0 =
style="BACKGROUND-COLOR: #ffffff"
face=Arial color=#000000 size=2 FAMILY="SANSSERIF"><FONT =
face="Comic Sans MS"
color=#000080 size=3>Del</FONT></DIV>
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