<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html xmlns:v="urn:schemas-microsoft-com:vml" = xmlns:o="urn:schemas-microsoft-com:office:office" = xmlns:w="urn:schemas-microsoft-com:office:word" = xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <meta name=ProgId content=Word.Document> <meta name=Generator content="Microsoft Word 9"> <meta name=Originator content="Microsoft Word 9"> <link rel=File-List href="cid:filelist.xml@01C4C705.21018C50">  <style>  </style>  </head> <body bgcolor=white lang=EN-US link=blue vlink=blue = style='tab-interval:.5in'> <div class=Section1> Conduct your own test. Mic the end of a hammer shank, put a few = drops of CA glue on the end and mic again after it sets = up.<o:p></o:p> <![if = !supportEmptyParas]> <![endif]><o:p></o:p> <![if = !supportEmptyParas]> <![endif]><o:p></o:p> Dean<o:p></o:p> Dean May             cell = 812.239.3359<o:p></o:p></font= > PianoRebuilders.com   = 812.235.5272<o:p></o:p></font= > Terre Haute IN  47802<o:p></o:p></font= > <= span class=EmailStyle19><!= [if = !supportEmptyParas]> <![endif]><o:p></o:p> -----Original Message----- From: = pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On Behalf Of Farrell Sent: Wednesday, November = 10, 2004 8:33 AM To: Pianotech Subject: Re: Unglued = grand jack tender <![if = !supportEmptyParas]> <![endif]><o:p></o:p> CA swells wood? There is a rotational shear stress between the two pieces = of wood in this joint. That will always be there unless you run a = couple dowels (tiny) through there or some-such. No, I think you'll find that the CA = will "carry the load" - as well as it can. On a relative scale, CA = does not perform at its best when the joint is subjected to shear = stresses.<o:p></o:p><= /p>  <o:p></o:p><= /p> However, I have also used CA a number of times for years on this repair without a failure ......... that I am aware of.   ;-)<o:p></o:p><= /p>  <o:p></o:p><= /p> Terry Farrell<o:p></o:p>  <o:p></o:p><= /p> ----- Original Message ----- <o:p></o:p> <div style='border:none;border-left:solid black 1.5pt;padding:0in 0in = 0in 4.0pt; background:#E4E4E4'> <div style='font-color:black'>From: <a href="mailto:deanmay@pianorebuilders.com" = title="deanmay@pianorebuilders.com">Dean May</a> </div> <o:p></o:p>= <p class=MsoNormal = style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:39.75pt;background:white;mso-shading:transparent;border:none;= mso-border-left-alt:solid black 1.5pt;padding:0in;mso-padding-alt:0in = 0in 0in 4.0pt'>To: <a href="mailto:pianotech@ptg.org" = title="pianotech@ptg.org">Pianotech</a> <o:p></o:p> <p class=MsoNormal = style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:39.75pt;background:white;mso-shading:transparent;border:none;= mso-border-left-alt:solid black 1.5pt;padding:0in;mso-padding-alt:0in = 0in 0in 4.0pt'>Sent: Wednesday, November 10, 2004 7:50 AM<o:p></o:p> <p class=MsoNormal = style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:39.75pt;background:white;mso-shading:transparent;border:none;= mso-border-left-alt:solid black 1.5pt;padding:0in;mso-padding-alt:0in = 0in 0in 4.0pt'>Subject: RE: Unglued grand jack tender<o:p></o:p> <p class=MsoNormal = style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:39.75pt;background:white;mso-shading:transparent;border:none;= mso-border-left-alt:solid black 1.5pt;padding:0in;mso-padding-alt:0in = 0in 0in 4.0pt'><![if = !supportEmptyParas]> <![endif]><o:p></o:p><= /p> Joe,<o:p></o:p>  <o:p></o:p> Do you have personal experience with these jacks = failing after being CA’d? Remember the CA is not carrying the stress, the = joint is. The CA has swollen the wood and set. It seems to me that this enables the = wood joint to carry the load as it should. It is not the bonding power of CA = that we are using here. <o:p></o:p>  <o:p></o:p> My personal experience is not one failure from jacks = glued 6 years ago.<o:p></o:p>  <o:p></o:p> Dean<o:p></o:p>= Dean May           &n= bsp; cell 812.239.3359<o:p></o:p> PianoRebuilders.com   = 812.235.5272<o:p></o:p><= /p> Terre Haute IN  = 47802<o:p></o:p><= /p>  <o:p></o:p> </div> <div style='border:none;border-left:solid black 1.5pt;padding:0in 0in = 0in 4.0pt'> -----Original Message----- From: = pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On = Behalf Of Joe Garrett Sent: Tuesday, November = 09, 2004 8:54 PM To: pianotech Subject: Re: Unglued = grand jack tender<o:p></o:p>  <o:p></o:p><= /p> Cy asked: " why are those = jacks made in two pieces to begin with?  Is it just so they can = fail in = a repairable way if regulation is off (too much = aftertouch)?"<o:p></o:p>  <o:p></o:p><= /p> Cy,<o:p></o:p> Being the maker of obsolete action parts, I can say the = Jack is the most difficult item to make. (just close your eyes and try to = imagine how that configuration is cut!) It's made that way, because it's better, = IMO<o:p></o:p><= /p> BTW, I hope you are prepared to replace those jacks, as in = fairly soon, as CA doesn't last very well in Stress applications. Please don't = do that anymore. I don't care if it is in some PTG manual.....it's a bad way to = repair something like that! Especially in a high end piano! = Yikes!<o:p></o:p><= /p> <G><o:p></o:p> Best Regards,<o:p></o:p>  <o:p></o:p> Joe Garrett, R.P.T. Captain, Tool Police Squares R I<o:p></o:p> </div> </div> </body> </html>