Filing at the throat will lower the pitch >g< Joe Goss BSMusEd MMusEd RPT imatunr at srvinet.com www.mothergoosetools.com ----- Original Message ----- From: tnrwim at aol.com To: pianotech at ptg.org Sent: Wednesday, January 19, 2011 11:24 AM Subject: Re: [pianotech] A432 Tuning Fork Jim An A fork that is 6 cents low is not at A432. At A, there are four cents per beat. So a fork that is 6 cents flat is at A442.5. It shouldn't take much to file throat of the fork to reach 440. Wim -----Original Message----- From: James Sasso <jwsasso at gmail.com> To: pianotech <pianotech at ptg.org> Sent: Wed, Jan 19, 2011 6:11 am Subject: [pianotech] A432 Tuning Fork Hello Everyone; I just bought a John Walker tuning fork from Schaff in preparation for my tuning exam. All electronic instruments indicate this fork is 6-8 cents flat at room temperature. I'd like to get some feedback as to options. My other forks average average to within 2 cents of C5 and A4 but the A4 one is aluminum. I was thinking of keeping and filing the John Walker fork, but wouldn't 6-8 cents require an awful lot of filing and mutilation of the fork? Another option would be to return the current one and ask Schaff to send one closer to A440. A final option I've considered is to purchase a Sanderson Accu-fork ($165 Pianotek). Any comments would be appreciated. Thanks, Jim -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20110120/5dcfcebd/attachment.htm>
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