<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML style="FONT-SIZE: x-small; FONT-FAMILY: MS Sans Serif" 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=us-ascii"> <META content="MSHTML 6.00.2900.2912" name=GENERATOR> <STYLE>v\:* { BEHAVIOR: url(#default#VML) } o\:* { BEHAVIOR: url(#default#VML) } w\:* { BEHAVIOR: url(#default#VML) } .shape { BEHAVIOR: url(#default#VML) } </STYLE> <o:SmartTagType name="PersonName" namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType> <STYLE> st1\:*{behavior:url(#default#ieooui) } </STYLE> <STYLE>  </STYLE> </HEAD> <BODY lang=EN-US vLink=purple link=blue bgColor=white> <DIV> <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma>-----Original Message-----<BR><B>From:</B> William R. Monroe [mailto:pianotech@a440piano.net]<BR><B>Sent:</B> Wednesday, November 08, 2006 5:59 AM<BR><B>To:</B> dnereson@4dv.net; Pianotech List<BR><B>Subject:</B> Re: wasted CA on grand pinblock<BR><BR></FONT></DIV> <DIV><FONT face="Bookman Old Style">Dave,</FONT></DIV> <DIV><FONT face="Bookman Old Style"></FONT> </DIV> <DIV><FONT face="Bookman Old Style">How much CA did you use?  It's about $10 for 2 oz., (and as I wrote earlier, I'd rarely use that much for an entire block) not real expensive in my book, if it can keep an instrument tunable till a rebuild is possible (or the piano is junked for other reasons).  </FONT></DIV> <DIV><FONT face="Bookman Old Style"></FONT> </DIV> <DIV><FONT face=Arial><SPAN class=238394405-10112006>  </SPAN></FONT><SPAN class=016554807-08112006><SPAN class=238394405-10112006><FONT face=Arial>     Yes, I did use almost an entire 2 oz. bottle.  I'm just frustrated with buying CA glue and having it set-up solid in the bottle before you even get to use it all, and it's considerably more costly than other glues.</FONT></SPAN></SPAN></DIV> <DIV><SPAN class=016554807-08112006><SPAN class=238394405-10112006><SPAN class=926565405-10112006><FONT face=Arial>    <FONT size=3>Anyhow, yes, I probably used too much and that's why it leaked out and dripped down the flange.  I did use a hypo oiler, but you can't really tell how much is going in there.  The pins had all been driven in already, so the coils were quite close to the plate.  I didn't want to glue the coils to the tuning pins or the strings to the plate, so I held the tip of the oiler right down in the hole.  Aside from how fast the bottle is emptying, you can't really tell how many drops per pin are flowing out.  </FONT></FONT></SPAN></SPAN></SPAN></DIV> <DIV><SPAN class=016554807-08112006><SPAN class=238394405-10112006><FONT face=Arial><SPAN class=926565405-10112006><FONT size=3> </FONT></SPAN> </FONT></SPAN></SPAN></DIV></BLOCKQUOTE></DIV> <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma>-----Original Message-----<BR><B>From:</B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]<B>On Behalf Of </B>Frank Emerson<BR><B>Sent:</B> Wednesday, November 08, 2006 8:49 PM<BR><B>To:</B> Pianotech List<BR><B>Subject:</B> Re: wasted CA on grand pinblock<BR><BR></FONT></DIV> <DIV>How do you know if there is a gap between the pinblock and the plate?  <SPAN class=926565405-10112006><FONT face=Arial size=3> </FONT></SPAN></DIV> <DIV><SPAN class=926565405-10112006></SPAN> </DIV> <DIV><SPAN class=926565405-10112006><FONT face=Arial size=3>I had a bright light, and with no tuning pin bushings, I could almost see the gap, at least in the few tuning pin holes where the pins hadn't been driven in.   </FONT></SPAN></DIV> <DIV><SPAN class=926565405-10112006><FONT face=Arial size=3></FONT></SPAN> </DIV> <DIV><SPAN class=926565405-10112006> </SPAN>Tighten the pinblock screws.  If you find that they can be tightened even a little, the gap described in the original post probably did exist, before tightening the screws.  With about 20 tons of combined string tension pulling on the pins significantly above the top surface of the pinblock, the tension will pull the pinblock up to the plate at the stretch side of the block, and down, away from the plate at the plate flange side.  This is encouraged by the draft angle of the plate flange (about 7 degrees), matched by the angle of a well-fitted pinblock.  Even this slight angle of incline constitutes a ramp to further encourage movement in this direction.<SPAN class=926565405-10112006><FONT face=Arial size=3> </FONT></SPAN></DIV> <DIV><SPAN class=926565405-10112006></SPAN> </DIV> <DIV><SPAN class=926565405-10112006></SPAN> </DIV> <DIV><SPAN class=926565405-10112006><FONT face=Arial size=3>So you're saying the pull tends to create a gap between plate and block towards the flange side of the</FONT> <FONT face=Arial size=3>pinblock?</FONT></SPAN></DIV> <DIV> </DIV> <DIV>I have no experience with CA treatment of pinblocks, but in light of the problem presented in the original post, I would suggest tightening and retightening all plate screws before CA treatment.</DIV> <DIV><SPAN class=926565405-10112006><FONT face=Arial size=3>. . . . .</FONT></SPAN></DIV> <DIV> </DIV> <DIV> <DIV>Frank Emerson</DIV> <DIV><A href="mailto:pianoguru@earthlink.net">pianoguru@earthlink.net</A></DIV> <DIV> </DIV></DIV> <DIV> </DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid"> <DIV style="FONT: 10pt Arial"><SPAN class=926565405-10112006><FONT size=3>   </FONT></SPAN><FONT size=2></DIV></FONT></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>