<!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 6.00.2800.1170" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Wim,,, Obviously, the acrylic keytops = and the plastics used in the bottles are made of different materials for their = different properties...</FONT></DIV> <DIV><FONT face=Arial size=2>    Many people don't = realize that many very powerful acids are routinely stored, safely,  in plastic containers. I'm not a chemist, and to fully explain it would take more = knowledge of the subject than I have... All I can say is,, Ain't Science = Grand!  We need more of it, and less emotional opinion in this world of = ours..</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Kevin </FONT></DIV> <BLOCKQUOTE 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=Wimblees@aol.com = href="mailto:Wimblees@aol.com">Wimblees@aol.com</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = title=Pianotech@PTG.org href="mailto:Pianotech@PTG.org">Pianotech@PTG.org</A> ; <A = title=caut@ptg.org href="mailto:caut@ptg.org">caut@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, April 25, 2003 = 9:08 AM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> melting plastic = SOT</DIV> <DIV><BR></DIV><FONT face=arial,helvetica><FONT lang=0 = face=Arial size=2 FAMILY="SANSSERIF">Melting Plastic, SOT, (Slightly Off = Topic.)<BR><BR>For hammer juice, I use acetone and keytops. I keep this solution in a = plastic bottle.<BR><BR>I'm no chemist, so how come the acetone dissolves the = plastic keytops, but doesn't  dissolve the plastic bottle in which it is kept?<BR><BR>Wim  <BR><BR>PS. Before I get blasted for using this = stuff in the first place. please be assured I use it very sparingly only on = Steinway hammers when I voice. These Steinway hammers are first given a liberal = dose of lacquer and lacquer thinner, as per factory specification. I don't use = any kind of juice on other hammers. (I keep the lacquer mixture in a = plastic bottle too, (a mustard bottle), and it doesn't dissolve = either.)</FONT> </FONT></BLOCKQUOTE></BODY></HTML>