<!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 6.00.2900.2963" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>The Calculating Technician is out of print. Does anyone have a copy that I could beg, borrow or steal? On this topic, I've heard that the calculations (or the approach) are not quite right. I wouldn't know but would be interested in hearing any comments? Besides you gotta start somewhere.</FONT></DIV> <DIV> </DIV> <DIV>Jude Reveley, RPT<BR>Absolute Piano Restoration, LLC<BR>Boston, Massachusetts</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=jkanter@rollingball.com href="mailto:jkanter@rollingball.com">Jason Kanter</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 26, 2006 5:49 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Call for scaling spreadsheets</DIV> <DIV><BR></DIV> <DIV><STRONG><FONT color=#008080 size=2>List</FONT></STRONG></DIV> <DIV><STRONG><FONT color=#008080 size=2>If any of you have and are willing to share your scaling spreadsheets - please send to me. In response to Ric Brekne's recent suggestion, I am offering to use my Excel skills to take a crack at making a nice, user-friendly, efficient graphing spreadsheet that we can all use to improve our study and understanding of this area of the craft. I will compile the best ideas and hopefully come up with something really useful.</FONT></STRONG></DIV> <DIV><STRONG><FONT color=#008080 size=2></FONT></STRONG> </DIV> <DIV><STRONG><FONT color=#008080 size=2>I don't presently know much about scaling, but I do know Excel and have access to the "Calculating Technician" Journal series where a lot of this was discussed.</FONT></STRONG></DIV> <DIV><STRONG><FONT color=#008080 size=2></FONT></STRONG> </DIV> <DIV><STRONG><FONT color=#008080 size=2>What do you measure, and what formulas do you apply, and what are the dependencies, constraints and limits? The parameters suggested by Ric include:</FONT></STRONG></DIV> <DIV><STRONG><FONT color=#008080 size=2></FONT></STRONG> </DIV> <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px"> <DIV>Inputs:   </DIV> <DIV>Diameters </DIV> <DIV>lengths </DIV> <DIV>type of string material?</DIV> <DIV><STRONG><FONT color=#008080 size=2></FONT></STRONG> </DIV> <DIV><STRONG><FONT color=#008080 size=2>Outputs:</FONT></STRONG></DIV> <DIV> <DIV>inharmonicity </DIV> <DIV>tension</DIV> <DIV>breaking point % </DIV> <DIV>frequency.</DIV> <DIV><STRONG><FONT color=#008080 size=2></FONT></STRONG> </DIV> <DIV><STRONG><FONT color=#008080 size=2>For bass strings:</FONT></STRONG></DIV> <DIV><STRONG><FONT color=#008080 size=2>how do you deal with wrapping?</FONT></STRONG></DIV> <DIV><STRONG><FONT color=#008080 size=2></FONT></STRONG> </DIV></DIV></BLOCKQUOTE> <DIV dir=ltr><STRONG><FONT color=#008080 size=2>And since we will no doubt be looking to improve scaling, what kinds of what-ifs would you like to automate?</FONT></STRONG></DIV> <DIV dir=ltr><STRONG><FONT color=#008080 size=2></FONT></STRONG> </DIV> <DIV dir=ltr><STRONG><FONT color=#008080 size=2>I am proposing this as a volunteer project, the output to be freely available. Maybe that idea creates difficulties since it might "compete" with commercially available programs. If that's an issue, let me know and we'll think about it.</FONT></STRONG></DIV> <DIV dir=ltr><STRONG><FONT color=#008080 size=2></FONT></STRONG> </DIV> <DIV dir=ltr><STRONG><FONT color=#008080 size=2>Jason</FONT></STRONG></DIV></BLOCKQUOTE></BODY></HTML>