<!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 6.00.2900.2180" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>One problem I have had with mylar, = especially for bridge pin layout, is that if you use a small punch to locate the holes, = this gradually stretches and distorts a tiny bit as you go.  I'll tell = you how I was going about it.  I removed the plate and drilled small pilot = holes through a rough cut piece of mylar and the bridge under the = struts.  I tacked the mylar down with a bridge pin or small nail (I forget).  = Then went about tapping the bridge pin holes.  The closer I got to the = opposite end the more of a "bubble" I had.  I guess I should have used a = soldering iron.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Mike Bratcher</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=mfarrel2@tampabay.rr.com href="mailto:mfarrel2@tampabay.rr.com">Farrell</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> Friday, August 20, 2004 = 3:49 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Locating Tuning Pin = Holes</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial size=2>I am about to replace my first = open-faced pinblock. It is a 100+ year old 6'4" Knabe grand. My question is how = best to re-locate the tuning pin holes. I can easily imagine an assortment of approaches that should work - paper tracings, marked-up mylar, etc. - = but I can also imagine these approaches to have some introduced error also. = Maybe the best is to do the tracing or mylar and just correct as needed.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>But I'm also sure that many of you = have been through this and have a better feel for what works and what doesn't. = The original tuning pin array was very nicely spaced for good string = lay/spacing, etc., so I would like to maintain the original. Any ideas would be = greatly appreciated.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Terry Farrell</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2><A = href="http://www.farrellpiano.com">www.farrellpiano.com</A></FONT></DIV= ></BLOCKQUOTE></BODY></HTML>