This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment It was caused by impurities in the felt, which hadn't been prepared properly. This caused corrosion at the coil. If you replace the springs, first remove the felt, and neutralize the wood, or your new springs will corrode as well. DAMHIK John M. Ross Windsor, Nova Scotia, Canada jrpiano@win.eastlink.ca ----- Original Message ----- From: Wesley Hardman To: Pianotech Sent: Sunday, February 26, 2006 11:30 AM Subject: Hammer Butt Springs Like most of you, occasionally I run across a piano manufactured 35-40 years ago in which hammer butt springs are missing, and those that remain can be broken off by just touching them. Does anyone know specifically why this happens? Is it the properties of the metal used to make the springs, or is it a reaction caused by the felt surrounding the springs that causes them to become brittle and easy to break? Wesley Hardman Alabama ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/d1/ed/ac/fc/attachment.htm ---------------------- multipart/alternative attachment--
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