<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1555" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY style="WORD-WRAP: break-word; khtml-nbsp-mode: space; khtml-line-break: after-white-space" bgColor=#ffffff> <DIV><FONT face=Arial size=2>Hi Fred, Those were made special for you. Always wondered if you liked them. Now know.</FONT></DIV> <DIV>Joe Goss RPT<BR>Mother Goose Tools<BR><A href="mailto:imatunr@srvinet.com">imatunr@srvinet.com</A><BR><A href="http://www.mothergoosetools.com">www.mothergoosetools.com</A></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=fssturm@unm.edu href="mailto:fssturm@unm.edu">Fred Sturm</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=caut@ptg.org href="mailto:caut@ptg.org">College and University Technicians</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 11, 2007 10:31 AM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [CAUT] center pinning changes/ long pin method</DIV> <DIV><BR></DIV>Hi Jim, <DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>Can you describe the long pin method? We discussed something along those lines on this list a while back, but I never got all the details. I understand one is using pins long enough to go through several flanges, but I'm not clear how exactly one proceeds. Does the whole length of the long pin get pushed through the bird's eye of each flange? That seems awfully cumbersome and potentially a bit destructive.</DIV> <DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>Joe Goss has long burnishers - very long as in a meter or so - for all American sizes of pins, and those can be used as you describe for pulling through the bushing. I must say I am a bit skeptical about the idea that it makes much difference doing the pulling in one direction, but maybe you're right.</DIV> <DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN> In burnishing center felt, it seems to me that the burnisher is going to be pressing against the felt hard enough that fibers wouldn't be able to move around, at least significantly. At this point in my own work I mostly do a rapid back and forth action, fast enough and enough of them to create a good bit of heat. (You can get heat pulling the burnisher through all the way rapidly, but  I think I get more heat faster by doing back and forth, as the metal of the burnisher heats up). That seems to set the felt quite nicely. And it seems to be possible to move up a half size to a full size just using burnishing action without removing any felt, just the ironing action. I haven't been doing it this way long enough to have a good sense for longevity and whatnot, but it seems to be good so far. Certainly makes sense, as long as the felt in the bushings doesn't swell later, maybe due to humidity rise, and make the centers sluggish, and I haven't found that in university pianos, which get quite a bit of use. Of course I am dealing with my own humidity environment, which is typically 10% to 60% range. <BR> <DIV><SPAN class=Apple-style-span style="WORD-SPACING: 0px; FONT: 12px Helvetica; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BORDER-COLLAPSE: separate; border-spacing: 0px 0px; khtml-text-decorations-in-effect: none; apple-text-size-adjust: auto; orphans: 2; widows: 2"><SPAN class=Apple-style-span style="WORD-SPACING: 0px; FONT: 12px Helvetica; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BORDER-COLLAPSE: separate; border-spacing: 0px 0px; khtml-text-decorations-in-effect: none; apple-text-size-adjust: auto; orphans: 2; widows: 2"> <DIV>Regards,</DIV> <DIV>Fred Sturm</DIV> <DIV>University of New Mexico</DIV> <DIV><A href="mailto:fssturm@unm.edu">fssturm@unm.edu</A></DIV> <DIV><BR class=khtml-block-placeholder></DIV><BR class=Apple-interchange-newline></SPAN></SPAN></DIV><BR> <DIV> <DIV>On Sep 10, 2007, at 12:48 PM, Jim Busby wrote:</DIV><BR class=Apple-interchange-newline> <BLOCKQUOTE type="cite"> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>Hi Ted,</FONT></P> <P style="MIN-HEIGHT: 14px; MARGIN: 0px; FONT: 12px Helvetica"><BR></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>Just some feedback on the "long pinning method" you mention below</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>(Thanks Jurgen!). I have been doing this for quite a while now and it</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>seems to have much more longevity and be more stable than other methods.</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>I think it is because the long pin pulls one direction through the</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>center, thus "combing" the fibers in one direction and packing them in</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>tight. When I use other back and forth burnishing techniques and "shake</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>down" the parts the grams may go from say 5 to 4 or 3 until they become</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>immovable. With the long pinning method there is no "shaking down"</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>necessary or possible. Either way is good and can be done to perfection,</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>but this "European way" is becoming my preferred method because of this</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>instant and permanent stability and better longevity. Better Longevity</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>means that I repin about every 3-4 years instead of every 2-3 years. It</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>may be even better than that because I'm at about 4 years since I</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>started using the method and some are still good!</FONT></P> <P style="MIN-HEIGHT: 14px; MARGIN: 0px; FONT: 12px Helvetica"><BR></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>Regards,</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica size=3>Jim Busby BYU</FONT></P></BLOCKQUOTE></DIV><BR></DIV></BLOCKQUOTE></BODY></HTML>