<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content=text/html;charset=iso-8859-1 = http-equiv=Content-Type> <META content="MSHTML 5.00.2919.6307" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV>"Do you think that this was a reaction between the clamp and the = chemical (I wiped the ivory with a damp cloth first)?"</DIV> <DIV> </DIV> <DIV>No doubt.</DIV> <DIV> </DIV> <DIV>"Should I re-bleach?"</DIV> <DIV> </DIV> <DIV>I suppose. I've never had to do that, because I've never run into = that. You might try a little bleach on a rag and perhaps wipe the ivory to = see if the brass stuff comes off.</DIV> <DIV> </DIV> <DIV>I know some people take real bad ivories off the key and soak them = in bleach. Maybe you need to get a little more extreme like that. But next = time you glue the ivory back on, make sure it is completely dry and has no bleach = residue.</DIV> <DIV> </DIV> <DIV>Terry Farrell<BR>Piano Tuning & Service<BR>Tampa, Florida<BR><A = href="mailto:mfarrel2@tampabay.rr.com">mfarrel2@tampabay.rr.com</A></DI= V> <BLOCKQUOTE style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: = 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A href="mailto:pianotec@ihug.co.nz" = title=pianotec@ihug.co.nz>Stephen Powell</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = href="mailto:pianotech@ptg.org" title=pianotech@ptg.org>Pianotech List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, February 25, 2001 = 3:07 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Ivory problems - Help Help!</DIV> <DIV><BR></DIV> <DIV><FONT color=#000000 size=2>Hi list!</FONT></DIV> <DIV><FONT color=#000000 size=2></FONT> </DIV> <DIV><FONT color=#000000 size=2>A few days ago, I bleached a set = of one-piece ivories (older Kawai) using the hydrogen peroxide/UV light = technique.  This was a first time for me, and I'm really pleased with the = results.  However, a number of the ivories in the centre section loosened.  = I have always had success using whitened hide glue for ivory work, and = decided to reglue one with the nice looking new ivory head clamp that I got from = Schaff (part #249); I've just used spring clamps in the past.  Anyway, I = glued one and horror of horrors, the ivory is GREEN where it was in contact = with the brass head clamp!  </FONT></DIV> <DIV><FONT color=#000000 size=2></FONT> </DIV> <DIV><FONT color=#000000 size=2>Soooo friendly experts, what do I = do now?!  Do you think that this was a reaction between the clamp = and the chemical (I wiped the ivory with a damp cloth first)?  Should I re-bleach?  HELP, HELP!!</FONT></DIV> <DIV><FONT color=#000000 size=2></FONT> </DIV> <DIV><FONT size=2>Regards,</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Stephen Powell RPT</FONT></DIV> <DIV><FONT size=2>Auckland, = NZ</FONT></DIV></BLOCKQUOTE></BODY></HTML>