<!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 6.00.2800.1226" name=GENERATOR></HEAD> <BODY> <DIV><SPAN class=687403119-13022004><FONT face=Arial color=#0000ff size=2>My first guess would be the cement floor. Specially if the house was recently remodeled, the cement floor might not be dry yet. The other thing that comes to mind is the cleaner used to clean the floor. These cleaners are sometimes cautic and if the floor is left wet, the chemicals will get in the surrounding air and attack the metal strings.</FONT></SPAN></DIV> <DIV><SPAN class=687403119-13022004><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=687403119-13022004><FONT face=Arial color=#0000ff size=2>You could recommend a poly sheet under the piano. This sheet could be covered with a carpet. This could help the acoustics ( I don't like the way pianos sound on concrete).</FONT></SPAN></DIV> <DIV><SPAN class=687403119-13022004><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=687403119-13022004><FONT face=Arial color=#0000ff size=2>Just my 2 ¢</FONT></SPAN></DIV> <DIV><SPAN class=687403119-13022004><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV><SPAN class=687403119-13022004><FONT face=Arial color=#0000ff size=2>Marcel Carey, RPT</FONT></SPAN></DIV> <DIV><SPAN class=687403119-13022004><FONT face=Arial color=#0000ff size=2>Sherbrooke, QC</FONT></SPAN></DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid"> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]<B>On Behalf Of </B>Piannaman@aol.com<BR><B>Sent:</B> 13 février, 2004 09:10<BR><B>To:</B> pianotech@ptg.org<BR><B>Subject:</B> Re: Rust on strings<BR><BR></FONT></DIV><FONT face=arial,helvetica><FONT size=2 PTSIZE="10">James, <BR><BR>There is seldom need for DC units installed in this region, the SF Bay Area.  I'm not sure of the relative humidity, but it is very temperate.  Most of the old pianos that have spent their lives in this area, if cared for, are in good condition.  I so seldom see rust on piano strings, that seeing it on a piano this new really surprised me. <BR><BR>The house is a newly remodeled, multi-million dollar home with digitized this and that, climate control, yada, yada...which is another reason I was taken aback by this. <BR><BR>I made several recommendations based on my observations, but whether or not they are necessary depends on a couple of things.   <BR><BR>I'll wait and see if a few more people want to guess at it, then I'll let you know what I'm pretty certain is the cause. <BR><BR>Dave <BR><BR>In a message dated 2/13/04 5:49:38 AM Pacific Standard Time, jkelly1722@earthlink.net writes: <BR><BR><BR> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px" TYPE="CITE">A lot will depend on the environment the piano is in and where it came from, how it was stored etc etc. Give me more details- are you in a high humidity location ? have you measured the temp and r/h in and around the piano ? what type of house is it- new old drafty ? <BR><BR>I hope you have looked at the possibility of a full dampp chaser and undercover for this piano ? <BR><BR>I am on the coast of SC and see all types of rust issues. New piano rust in no time- I tuned a Pearl River Grand the other day with rust pits on most of the high treble/non damped strings. One <BR>trichord had crusty rust near the tuning pins on all 3 strings.  Try as I do it is hard to convince people that humidity control systems are needed here. I have a full system in my Wurlitzer <BR>console and you can not find 1 rust spot in it. We had an incredible humid summer and without a dc it would have been a rust bucket. Over the winter it has called for water about every 2 weeks because the relative humidity is low. <BR><BR> You mentioned you think you know the cause - what do you think it is ? Is the piano near windows or ac/heat vents ?   <BR></FONT><FONT lang=0 style="BACKGROUND-COLOR: #ffffff" face=Arial color=#000000 size=3 PTSIZE="12" FAMILY="SANSSERIF" BACK="#ffffff"></BLOCKQUOTE><BR></FONT><FONT lang=0 style="BACKGROUND-COLOR: #ffffff" face=Arial color=#000000 size=2 PTSIZE="10" FAMILY="SANSSERIF" BACK="#ffffff"><BR></BLOCKQUOTE></FONT></FONT></BODY></HTML>