<div>That was one of our comments, too. We recognized that the lead used in pianos is a compound. But the question we had was, what other element in lead causes key leads to corrode? Are all key leads the same compound? Do all key leads come from the same manufacturer? Did Sohmern and Kimball us the same supplier of key leads?</div> <div> </div> <div>Lots of different questions.  But no answers.<br> <br> </div> <div style="CLEAR: both">Willem (Wim) Blees, RPT<br> Piano Tuner/Technician<br> Honolulu, HI<br> Author of <br> The Business of Piano Tuning<br> available from Potter Press<br> www.pianotuning.com</div> <br> <br> -----Original Message-----<br> From: John Delacour <JD@Pianomaker.co.uk><br> To: Pianotech List <pianotech@ptg.org><br> Sent: Fri, 21 Mar 2008 10:36 pm<br> Subject: Re: lead corrosion revisited<br> <br> <div id=AOLMsgPart_0_bfc3dc67-934f-4b75-8cb0-a7b35f2f75dc style="FONT-SIZE: 12px; MARGIN: 0px; COLOR: #000; FONT-FAMILY: Tahoma, Verdana, Arial, Sans-Serif; BACKGROUND-COLOR: #fff">At 22:53 -0700 21/3/08, Fenton Murray wrote: <br>  <br> >...I just read most of it and 2 things jumped out. End grain of wood >is most harmful, and of all species, basswood is listed as most >harmful. <br>  <br> Whatever wood is in question, and the worst cases I've seen have been in pine, it is adulterated lead that is the cause, as I have said in previous threads on this subject. Chemicals in the surrounding wood and in the air will not do any significant harm to pure lead. <br>  <br> JD <br>  <br>  <br>  <br> </div> <div id='u8CA5A5A7F3837CE-1488-369C' class='aol_ad_footer'><FONT style="color: black; font: normal 10pt ARIAL, SAN-SERIF;"><HR style="MARGIN-TOP: 10px">Planning your summer road trip? Check out <A title="http://travel.aol.com/travel-guide/united-states?ncid=aoltrv00030000000015" href="http://travel.aol.com/travel-guide/united-states?ncid=aoltrv00030000000015" target="_blank">AOL Travel Guides</A>.</FONT> </div>