Richard Why some leads in some pianos corrode, and other don't, is a mystery, but it is not caused by moving the piano. High humidity does make it worse, as I have seen a lot of this here in Hawaii. When the leads turn to powder, then the only solution is to change them. If they are just swollen, without the powder, they can be chiseled off, and then sealed with shellac. Willem (Wim) Blees, RPT Piano Tuner/Technician 94-505 Kealakaa Str. Mililani, Oahu, HI 96789 808-349-2943 www.Bleespiano.com Author of: The Business of Piano Tuning available from Potter Press www.pianotuning.com -----Original Message----- From: richard strang <rstrang at cableonda.net> To: ptg <pianotech at ptg.org> Sent: Thu, Jan 7, 2010 11:26 am Subject: [pianotech] Growing leads List, I have just encountered a Welmar grand piano that has a problem with the lead weights in each key. The lead weights in each key are growing in size, splitting the keys in half. There is a white powder forming over each lead weight. Can someone please tell me the cause of this? It is becoming a legal problem with the moving company. Please advise. Regards, Richard Strang -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100107/40010887/attachment.htm>
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