<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=us-ascii"> <META content="MSHTML 6.00.2800.1458" name=GENERATOR></HEAD> <BODY> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2>Hello,</FONT></SPAN></DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2>I have always seen full length ivory key top sold by our German parts sellers = as well as 2 parts. (not cheap) 1 piece ivory seem a late process = (1960 or later) I seem to recall that all previous instruments where 2 parts = ivory, but may be it have nothing to do with age.</FONT></SPAN></DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2>What is sure is that actual ivory used is very thin, not very white, needing = a good 'butter cloth" (what you call cheese cloth) and white glue to look normal.</FONT></SPAN></DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2>I have seen the use of bone recovering, but the material look grayish and get = dirty too easily because of the grain orientation.</FONT></SPAN></DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2>Mammoth or fossil ivory have been said to me like a second = grade material, possibly too brittle.</FONT></SPAN></DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2>Ivorite from Yamaha is sold as a one part element that is only = grossly shaped and need to be cut to size, sanded and rubbed to get its final = look, it look interesting, but I notice it have a similar property as real ivory = that is the price (around 12$ for one key top, at last 400 $ a complete set . it = is thick and robust, but at some moment they had a problem with that = material that get grey and look dirty in a few years. they changed for free numerous = keyboards (C series) because of that, in fact this problem can be corrected  = at least temporarily (?) by sanding and a new rubbing (bleach does not work) .</FONT></SPAN></DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2>Best regards</FONT></SPAN></DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2>Congratulations for your new job BTW !</FONT></SPAN></DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2>Isaac OLEG</FONT></SPAN></DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=238420512-04082004> </SPAN></DIV> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT = face=Tahoma size=2>-----Message d'origine-----<BR><B>De :</B> = pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]<B>De la part de</B> David M. Porritt<BR><B>Envoyé :</B> mercredi 4 août 2004 = 13:50<BR><B>À :</B> pianotech@ptg.org<BR><B>Objet :</B> RE: = Keytops<BR><BR></FONT></DIV> <DIV> <DIV> <DIV align=left>Yes, I have a client with a Kawai 9' (model 800) piano = with one piece ivory.</DIV> <DIV align=left> </DIV> <DIV align=left>dave</DIV> <DIV align=left><BR>__________________________________________</DIV> <DIV align=left>David M. Porritt, RPT</DIV> <DIV align=left>Meadows School of the Arts</DIV> <DIV align=left>Southern Methodist University</DIV> <DIV align=left>Dallas, TX 75275</DIV> <DIV align=left><A href="mailto:dporritt@mail.smu.edu">dporritt@mail.smu.edu</A></DIV> <DIV align=left> </DIV> <DIV align=left><BR>----- Original message ----------------------------------------><BR>From: Matthew Todd = <<A href="mailto:pianotech88@yahoo.com">pianotech88@yahoo.com</A>><BR>To= : Pianotech <<A href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>><BR>Received: = Tue, 3 Aug 2004 20:12:07 -0700 (PDT)<BR>Subject: Keytops</DIV> <DIV align=left><BR>Is it true in EVERY circumstance that all ivory = keytops have two parts (head and tail), and plastic tops come in one piece.  Or = are there other ways to tell the difference?</DIV> <DIV> </DIV> <DIV>Someone on the list told me that I can never ask a stupid question, = so I guess this is a test.  I am just starting out, but thanks!</DIV> <DIV> </DIV> <DIV>Matthew</DIV></DIV></DIV> <P> <HR SIZE=1> Do you Yahoo!?<BR><A href="http://us.rd.yahoo.com/mail_us/taglines/100/*http://promotions.ya= hoo.com/new_mail/static/efficiency.html">New and Improved Yahoo! 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