Bill, All the jokes aside, unisons are the most important tuning we do. We should be focusing on unisons above all else, but how can you put a time length on unisons with all the variables. We do the best we can. A very skilled tuner's unisons will last longer than someone with less skill. I expect to be able to come to our concert piano and have it within a cent and the unisons very close. A once a year customer's piano unisons are going to stay as well as can be expected...whatever that means. Out of curiosity, what is your point? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: pianofritz50 at aol.com To: pianotech at ptg.org Received: 3/8/2010 7:17:33 PM Subject: [pianotech] How long do unisons hold? >This subject was probably addressed somewhere in the past, but I'd be interested in >any/all responses to this question: >How long do unisons hold (after a tuning)? >I realize it depends on the piano & the tuner... and the season, pin's torque, etc... >but I'm looking for a general rule of thumb. >Thanks... Bill Fritz, St Louis
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