<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML xmlns="http://www.w3.org/TR/REC-html40" xmlns:v = "urn:schemas-microsoft-com:vml" xmlns:o = "urn:schemas-microsoft-com:office:office" xmlns:w = "urn:schemas-microsoft-com:office:word" xmlns:st1 = "urn:schemas-microsoft-com:office:smarttags"><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content=Word.Document name=ProgId> <META content="MSHTML 6.00.2800.1400" name=GENERATOR> <META content="Microsoft Word 10" name=Originator><LINK href="cid:filelist.xml@01C49CB3.9DF56280" = rel=File-List><o:SmartTagType name="State" namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagT= ype><o:SmartTagType name="City" namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagT= ype><o:SmartTagType name="place" namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagT= ype><o:SmartTagType name="time" namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagT= ype><o:SmartTagType name="date" namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagT= ype> <STYLE>  </STYLE> </HEAD> <BODY lang=EN-US style="tab-interval: .5in" vLink=purple = link=blue bgColor=white> <DIV><FONT face=Arial size=2>If you go to <A href="http://www.westsystem.com">http://www.westsystem.com</A> and = click on "Product Information" and then "Typical Physical Properties" you will = get a bunch of info describing tensile and compressive strengths and = hardness of West System epoxies. I would imagine CA manufacturers might have similar = data on their products.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Anyone seeking info on epoxy really = should spend some time on the West System web site. It is packed with all sorts of = info. I find myself constantly going back to it to check various details or look = for an idea when faced with an application dilemma.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Terry Farrell</FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A title=davidlovepianos@comcast.net href="mailto:davidlovepianos@comcast.net">David Love</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = title=pianotech@ptg.org href="mailto:pianotech@ptg.org">'Pianotech'</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, September 17, = 2004 3:41 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> RE: CA glue</DIV> <DIV><BR></DIV> <DIV class=Section1> <P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Maybe = harder isn’t the best way to express it.<SPAN style="mso-spacerun: yes">  </SPAN>Resistance to compression is what I’m thinking of.<SPAN style="mso-spacerun: yes">  </SPAN>While in the case of a loose = bridge pin where the space is very small CA seems to work fine (though I = think epoxy is better assuming you have a way of delivering it) CA is not really = designed for “gap filling” in spite of the label on the bottle.<SPAN style="mso-spacerun: yes">  = </SPAN><o:p></o:p></SPAN></FONT></P> <DIV> <P><FONT face="Times New Roman" color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; mso-no-proof: yes">David Love<BR>davidlovepianos@comcast.net = </SPAN></FONT><o:p></o:p></P></DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Carl = Meyer<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> </SPAN></FONT><st1:date = Year="2004" Day="17" Month="9"><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">Friday, September 17, 2004</SPAN></FONT></st1:date><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> = </SPAN></FONT><st1:time Minute="33" Hour="10"><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">10:33 AM</SPAN></FONT></st1:time><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Pianotech<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: CA = glue</SPAN></FONT></P> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"><o:p> </o:p></SPAN></FONT></P> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">David, I'm not sure I = agree with you about epoxy being harder than ca. I have used both ca and = epoxy to fill rather small cracks in soundboards.  I don't recall, but I = think the ca was the gap filling one.</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I would put masking tape = on each side of the crack and fill so that the filler would be tape thickness = higher than the wood.</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I would then scrape to = level the surface.  It was a pain to scrape the ca because it was so hard = that it dulled my scraper.  </SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">That said, I think both = ca and epoxy are wonderful products and have many uses.  There are also = many opportunities to screw up with them.  DAMHIK.</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">It seems that ca and = epoxy adhere to each other very well.  I know a tech that will seal the top of = a crack with a white (tinted) epoxy paste, then turn the piano on its back and = fill the bottom with ca.  I don't know the thickness of the ca he = uses.  I think I would prefer a thin epoxy on the bottom.</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Carl Meyer Ptg assoc<BR></SPAN></FONT><st1:City><st1:place><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Santa Clara</SPAN></FONT></st1:place></st1:City><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">, Ca.</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <BLOCKQUOTE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: = medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0in; MARGIN: 5pt 0in 5pt = 3.75pt; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: = medium none"> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">----- Original Message = ----- <o:p></o:p></SPAN></FONT></P></DIV> <DIV style="font-color: black"> <P class=MsoNormal style="BACKGROUND: #e4e4e4; MARGIN-LEFT: = 0.5in"><B><FONT face=Arial size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: = Arial">From:</SPAN></FONT></B><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial"> <A title=davidlovepianos@comcast.net href="mailto:davidlovepianos@comcast.net">David Love</A> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT = face=Arial size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: = Arial">To:</SPAN></FONT></B><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial"> <A title=pianotech@ptg.org = href="mailto:pianotech@ptg.org">'Pianotech'</A> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT = face=Arial size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: = Arial">Sent:</SPAN></FONT></B><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial"> </SPAN></FONT><st1:date Year="2004" Day="16" Month="9"><FONT = face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">Thursday, September 16, 2004</SPAN></FONT></st1:date><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> = </SPAN></FONT><st1:time Minute="39" Hour="19"><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">7:39 PM</SPAN></FONT></st1:time><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial"><o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT = face=Arial size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: = Arial">Subject:</SPAN></FONT></B><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial"> RE: CA glue<o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT = face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P></DIV> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: = Arial">For larger bridge cracks and repairs I prefer epoxy.<SPAN style="mso-spacerun: yes">  </SPAN>It is better at gap = filling, cures harder and has better adhesion properties.<SPAN style="mso-spacerun: yes">  </SPAN>I prefer CA glue for = securing loose bridge pins or when the cracks are hairline and you need wicking properties.<SPAN style="mso-spacerun: yes">  </SPAN>I = wouldn’t expect either to fail if you didn’t use the material beyond what it was = designed for.<SPAN style="mso-spacerun: yes">  </SPAN>CA glue on loose = tuning pins is hard to predict since the pin is being moved periodically, = however, I have used this repair on several occasions and have not had a = problem even after several years.<SPAN style="mso-spacerun: yes">  </SPAN><o:p></o:p></SPAN></FONT></P> <P style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" = color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; mso-no-proof: = yes">David Love<BR>davidlovepianos@comcast.net </SPAN></FONT><o:p></o:p></P> <P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial = color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: = Arial"><o:p> </o:p></SPAN></FONT></P> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Tahoma = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original Message-----<BR><B><SPAN style="FONT-WEIGHT: = bold">From:</SPAN></B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] = <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Chris = Henke<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> </SPAN></FONT><st1:date = Year="2004" Day="16" Month="9"><FONT face=Tahoma = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">Thursday, September = 16, 2004</SPAN></FONT></st1:date><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> = </SPAN></FONT><st1:time Minute="17" Hour="8"><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">8:17 AM</SPAN></FONT></st1:time><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Pianotech = Listserv<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> CA glue</SPAN></FONT><o:p></o:p></P> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: = 12pt"><o:p> </o:p></SPAN></FONT></P> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">These questions should = make for some interesting discussion:</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">1) who likes to use CA = glue instead of Epoxy for cracked bridges, and why?</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">2) How long is a = cracked bridge repair using CA glue expected to = last?</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">3) How long is a loose = tuning pin repair using CA glue expected to last?</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times = New Roman" size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial = size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks, Chris Henke</SPAN></FONT><o:p></o:p></P></DIV> <DIV> <P class=MsoNormal style="MARGIN-LEFT: = 1in"><st1:place><st1:City><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">Portland</SPAN></FONT></st1:City><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">, </SPAN></FONT><st1:State><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">Oregon</SPAN></FONT></st1:State></st1:place><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial"><o:p></o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></DIV></BLOCKQUOTE= ></BODY></HTML>