<HTML><HEAD> <META charset=US-ASCII http-equiv=Content-Type content="text/html; cha= rset=US-ASCII"> <META content="MSHTML 6.00.2800.1400" name=GENERATOR></HEAD> <BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: #fffff= f"> <DIV> <DIV>    <FONT size=3> Hi Dave </FONT></DIV> <DIV><FONT size=3>  Just for accuracy. This is a quote from my post.<= /FONT></DIV> <DIV><FONT size=3>   Dale</FONT></DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue = 2px solid"><FONT face=Arial>Tension<BR>>> & compression go hand = in hand in the hammer pressing process.<BR>>>    As I stated= , & piano hammer makers can tell you, that too much<BR>>> tension<= BR>>> can<BR>>> be achieved during pressing in the outer layers = of felt and it can &<BR>>> will rip<BR>>> open in the crown.= This is the elastic limit of the felt.<BR>----- Original Message ----- <BR>= From: "antares" <antares@euronet.nl><BR>To: "Phillip Ford" <fordpia= no@earthlink.net>; "Pianotech"<BR><pianotech@ptg.org><BR>Sent: Tues= day, May 18, 2004 2:39 PM<BR>Subject: Alfred Dolge would smile upon us<BR><B= R>    I think this is the problem in Yamaha hammers.  As they= wear, the crown<BR>"blooms", i.e., spreads wider, making the hammer pear-sh= aped rather than its<BR>original "diamond" shape.  Anytime I've filed h= ammers on a Yamaha, not only<BR>is it difficult to find a "layer", but the c= rown spreads apart even worse<BR>from the filing than it already had been fr= om the string cuts.  So the inner<BR>part of the hammer must be compres= sed too much or the outer part is<BR>stretched too much, or both.<BR>  =   If the tone is too bright after the filing, then any voicing with<BR>= needles near the strike point (even if it's not right ON the strike point)<B= R>makes the crown spread apart even more.  It's very frustrating and I'= m not<BR>sure how to handle this problem.<BR>    --David Nereson, = RPT</FONT></BLOCKQUOTE></DIV> <DIV></DIV></BODY></HTML>