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Adjusting the pitch of a tuning fork reminds me of tuning brass reeds.
To sharpen, you scrape material off the free end (to reduce its mass
and allow it to vibrate faster); to flatten, you scrape material off
near the root (to reduce its stiffness and allow it to vibrate slower).
You never shorten the length of the reed.<br>
<br>
Similarly, I don't think it's necessary to shorten the tines to raise
the pitch of a tuning fork, but one can remove material from the inside
surface of each tine near the end, where the factory adjustment was
made, and not spoil the plating on the ends, furthermore, if you have a
plated fork.<br>
<br>
Tom Cole<br>
<br>
Joe And Penny Goss wrote:<br>
<blockquote type="cite" cite="mid008b01c48719$40ae1860$6637bbd0@setup00">
<pre wrap="">Hi Julia and others,
Talk pianos heresy!
To sharpen the pitch file equal amounts off the end of the tines. And to
lower the pitch remove material from the crotch of the fork .
Forks are usually built a tad on the flat side. An ETD used for tuning
pianos can be used in the cal
Joe Goss RPT
Mother Goose Tools
<a class="moz-txt-link-abbreviated" href="mailto:imatunr@srvinet.com">imatunr@srvinet.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.mothergoosetools.com">www.mothergoosetools.com</a>
----- Original Message -----
From: <a class="moz-txt-link-rfc2396E" href="mailto:Alpha88x@aol.com"><Alpha88x@aol.com></a>
To: <a class="moz-txt-link-rfc2396E" href="mailto:pianotech@ptg.org"><pianotech@ptg.org></a>
Sent: Friday, August 20, 2004 9:35 PM
Subject: Re: Setting pitch with a fork for exam
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<pre wrap="">In a message dated 8/20/2004 12:42:17 PM Eastern Daylight Time,
<a class="moz-txt-link-abbreviated" href="mailto:pianorye@yahoo.com">pianorye@yahoo.com</a> writes:
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<pre wrap="">This may seem fairly generous, but it also assumes that the fork is
calibrated. It's amazing how many people don't bother to calibrate their
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<pre wrap=""><!---->forks
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<pre wrap="">before the exam. I have seen people fail pitch who would have passed if
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<pre wrap=""><!---->their fork
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<blockquote type="cite">
<pre wrap="">had been properly calibrated.
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</blockquote>
<pre wrap="">Greetings,
How does one calibrate a their tuning fork?
Julia Gottchall,
Reading, PA
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