This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment I have a Yamaha grand which I service regularly and over the years has = had many broken strings, mainly bass. This is a gospel church with = enthusiastic pianists. When I first started servicing it there were = several replacement universal strings already on it so for a while I = continued with that practice until there were so many universals in the = bass the it was unrecognizable and untunable. I then talked the church = into a complete bass restring. I also filed and tone regulated the = hammers which were somewhat hard. About 4 months later I got a call = that a string had broken. Before I got there the second string of that = unison had broken also. Here's the strange thing I found and don't = understand. Previously when a string in the bass broke it broke at the = agraffe. This time both strings broke in the speaking lenght just = beyond the agraffe. When I removed the coils from the tuning pins to = install two newly made exact matches this time, I found that the wire of = both of the broken strings had a noticable nick in it right where it = passed through the agraffe. Not just a bend, a nick. I could catch my = fingernail in it. I don't know what this means. How can a brass = agraffe cause a nick in hard steel wire? And what implication does that = have about the breakage? Even if the agraffe has a bad surface where = the string passes through I don't see this happening. I called Schaff = and talked to the string department and the person I spoke with had no = idea. =20 Bad core wire maybe? But could it be that soft? =20 Weigh in. ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/0a/f6/92/30/attachment.htm ---------------------- multipart/alternative attachment--
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