<!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 6.00.2800.1264" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><SPAN class=787081115-09112003><FONT face=Arial color=#0000ff = size=2>Hello, that is a new to me : hydrochloric acid. - never hear of such, is it the = same as chloridric acid ? if it is the same it is probably not adequate (a = mistake ?).</FONT></SPAN></DIV> <DIV><SPAN class=787081115-09112003><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=787081115-09112003><FONT face=Arial color=#0000ff = size=2>While bleach (hydrogen peroxide 30% vol or Perhydrol) works, could it be = better ?  If the pore opening and the grayish coloration that can occur if = too much exposure with  hydrogen peroxys ("eau oxygénée" in French) = is limited with hydrochloric acid, that should be nice.</FONT></SPAN></DIV> <DIV><SPAN class=787081115-09112003><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=787081115-09112003><FONT face=Arial color=#0000ff = size=2>Many good quality ivories are often back to a whiter state only with sanding.</FONT></SPAN></DIV> <DIV><SPAN class=787081115-09112003><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=787081115-09112003><FONT face=Arial color=#0000ff = size=2>Nowadays you have to sand finely (400 - 600- 800)  the = ivory after application if you want them to buff well (even if you don't bleach it = sanding allow for a better buffing)</FONT></SPAN></DIV> <DIV><SPAN class=787081115-09112003><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=787081115-09112003><FONT face=Arial color=#0000ff = size=2>Sanding is easily done with an orbital sander laying on its = side (care to have a flat hard sanding plate or the angles will = suffer).</FONT></SPAN></DIV> <DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV> <DIV><FONT face=Arial color=#0000ff size=2><SPAN = class=787081115-09112003>To white an ivory is not good looking anyway I say what count is the veins = and the look and feel. I obtained some keys that where so nicely whitened they = look like ... plastic. so don't overdo that .</SPAN></FONT></DIV> <DIV><FONT face=Arial color=#0000ff size=2><SPAN class=787081115-09112003></SPAN></FONT> </DIV> <DIV><FONT face=Arial color=#0000ff size=2><SPAN = class=787081115-09112003>Best Regards.</SPAN></FONT></DIV> <DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV> <STYLE>  </STYLE> <TABLE cellSpacing=0 cellPadding=0 width=320 border=0> <TBODY> <TR> <TD> <TABLE height=80 cellSpacing=0 cellPadding=0 width=320 = align=right border=0> <TBODY> <TR> <TD class=tiny> <TABLE style="BORDER-RIGHT: #666666 1px solid; BORDER-TOP: = #666666 1px solid; BORDER-LEFT: #666666 1px solid; BORDER-BOTTOM: = #666666 1px solid" height="100%" cellSpacing=0 width=320> <TBODY> <TR bgColor=#ffffff> <TD class=tiny width="100%" height=1> <TABLE cellSpacing=0 cellPadding=1 width="100%" = border=0> <TBODY> <TR> <TD class=logotext style="PADDING-LEFT: = 5px"></TD> <TD class=noro style="PADDING-RIGHT: 5px; = FONT-SIZE: 7pt" = align=right>Pianomania</TD></TR></TBODY></TABLE></TD> <TD class=tiny></TD></TR> <TR> <TD colSpan=2> <TABLE height="100%" cellSpacing=2 width="100%" = align=right border=0> <TBODY> <TR style="PADDING-BOTTOM: 4px" height=1> <TD class=noro style="PADDING-LEFT: 4px" vAlign=top><B>Isaac OLEG</B><BR><I>accordeur - = reparateur - concert</I> </TD> <TD class=noro style="PADDING-RIGHT: 4px" = vAlign=top align=right><A class=psl = href="http://maps.yahoo.com/py/maps.py?Pyt=Tmap&addr=19+rue+Jul= es+Ferry&csz=94400+VITRY+sur+SEINE&country=us" target=_blank>19 rue Jules Ferry<BR>94400 = VITRY sur SEINE</A> </TD></TR> <TR height=1> <TD class=noro style="PADDING-LEFT: 4px; PADDING-BOTTOM: 4px" vAlign=bottom><A class=psl = href="mailto:oleg-i@noos.fr" target=_blank>oleg-i@noos.fr</A> </TD> <TD class=noro style="PADDING-RIGHT: 4px; PADDING-BOTTOM: 4px" vAlign=bottom align=right> <TABLE cellSpacing=0 align=right border=0> <TBODY> <TR> <TD class=noro noWrap align=right>tel: = <BR>fax: <BR>mobile: </TD> <TD class=noro style="PADDING-LEFT: 4px" = noWrap align=right>033 01 47 18 06 98<BR>33 01 47 = 18 06 90<BR>033 06 60 42 58 77 = </TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR></TBODY></T= ABLE></TD> <TD style="BACKGROUND-REPEAT: repeat-y" vAlign=top = width=6 = background=http://www.plaxo.com/images/card_shadow2_right_middle.gif height="100%"> <TABLE cellSpacing=0 cellPadding=0 border=0> <TBODY> <TR> <TD style="BACKGROUND-REPEAT: no-repeat" width=6 = background=http://www.plaxo.com/images/card_shadow2_right_top.gif height=7> </TD></TR></TBODY></TABLE></TD></TR> <TR> <TD class=tiny style="BACKGROUND-REPEAT: repeat-x" = background=http://www.plaxo.com/images/card_shadow2_bottom_middle.gif> <TABLE class=tiny cellSpacing=0 cellPadding=0 = width="100%" align=right border=0> <TBODY> <TR> <TD class=tiny style="BACKGROUND-REPEAT: no-repeat" = vAlign=top width=8 = background=http://www.plaxo.com/images/card_shadow2_bottom_left.gif height=6></TD> <TD class=tiny style="BACKGROUND-REPEAT: repeat-x" = vAlign=top = background=http://www.plaxo.com/images/card_shadow2_bottom_middle.gif height=6> </TD></TR></TBODY></TABLE></TD> <TD class=tiny style="BACKGROUND-REPEAT: no-repeat" = vAlign=top width=7 = background=http://www.plaxo.com/images/card_shadow2_bottom_right_corner= .gif height=6></TD></TR></TBODY></TABLE></TD></TR> <TR> <TD colSpan=2> <TABLE cellSpacing=0 cellPadding=0 width="100%"> <TBODY> <TR> <TD align=left><A class=brand = href="http://www.plaxo.com/signature/" target=_blank><I>Powered by Plaxo</I></A></TD> <TD align=right><A class=brand href="http://www.plaxo.com/signature/" = target=_blank><I>Want a signature like = this?</I></A></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE> <BLOCKQUOTE dir=ltr style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px = solid; MARGIN-RIGHT: 0px"> <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> Peter Burns<BR><B>Envoyé :</B> dimanche 9 novembre 2003 16:02<BR><B>À :</B> Pianotech<BR><B>Objet :</B> Re: how to = clean the ivory key from yellow to white <BR><BR></FONT></DIV> <DIV><FONT face=Arial size=2>Greetings list, I'm with Dave Nereson = on this one Ken.  Hydrochloric acid, a flourescent strip light and lots of = patience are needed to whiten ivory.  I use one strip bulb, which must be = left on all the time including overnight.  Arrange the keys underneath = the light and apply the acid with cotton wool several times a day.  It can = take a week or two depending on how yellow your keys are.</FONT></DIV> <DIV><FONT face=Arial size=2>When they are done, buff the key tops = with a buffing wheel if possible, to make them shine.  Do not get any = acid on your skin, so wear gloves.  In the UK you can only get = the acid from a chemist, who will want some proof of what it will be = used for.  Good luck.  </FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV>----- Original Message ----- </DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A title=ksinpiano@yahoo.com = href="mailto:ksinpiano@yahoo.com">Ken Sin</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, November 09, = 2003 7:06 AM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> re: how to clean the = ivory key from yellow to white </DIV> <DIV><BR></DIV> <DIV>Hi  ! </DIV> <DIV> </DIV> <DIV>I don't know how to make the ivory key from yellow to white = ?</DIV> <DIV> </DIV> <DIV>anyone can help me !</DIV> <DIV> </DIV> <DIV>Thanks !!!</DIV> <DIV> </DIV> <DIV>Piano Tuner Student </DIV><BR><BR> <DIV> <DIV> <DIV><FONT face="arial black" color=#0000bf><FONT size=4><FONT = size=2>KenSin</FONT> <BR></FONT><FONT size=1>Piano Tuner</FONT></FONT></DIV></DIV></DIV> <P> <HR SIZE=1> Do you Yahoo!?<BR><A = href="http://antispam.yahoo.com/whatsnewfree">Protect your identity with Yahoo! Mail AddressGuard</A></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>