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Hi Joe,<br>
The beauty of working with the rods is that the beginning of the rod is
a straight reamer of the exact size you need. The middle part of the
rod is used as a burnisher, again of the exact size. The flange is
finally moved to the end and the rod is cut off. Voila: a re-pinned
flange.<br>
<br>
While there are 25 sizes available, the most common pins used for
pianos range from 1.275 mm to 1.50 mm (.050 to .059"). The other
sizes have other applications for harpsichords, orchestrions, etc. I
have about 14 sizes in stock, of which I carry 10 or so in my tool kit.<br>
The pin sizes are not assigned numbers. A 1.1o mm pin is called a
"1.10", a 1.70 mm is a "1.70". That's it. I am speaking of the German
center pins here. I don't know what they do in Japan.<br>
<br>
Jurgen Goering<br>
Piano Forte Supply<br>
Vancouver Island, Canada<br>
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<div class="headerdisplayname" style="display: inline;">Subject:
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Re: Metric Center Pin Sizes</td>
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<div class="headerdisplayname" style="display: inline;">From: </div>
"Joe And Penny Goss" <a class="moz-txt-link-rfc2396E" href="mailto:imatunr@srvinet.com"><imatunr@srvinet.com></a></td>
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<div class="headerdisplayname" style="display: inline;">Date: </div>
Thu, 5 Aug 2004 22:05:20 -0600</td>
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<div class="headerdisplayname" style="display: inline;">To: </div>
"Pianotech" <a class="moz-txt-link-rfc2396E" href="mailto:pianotech@ptg.org"><pianotech@ptg.org></a></td>
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<div><font face="Arial" size="2">Hi Jurgen,</font></div>
<div><font face="Arial" size="2">Yes that is why who whats up and
when I am confused and do not want to proceed untill we have the
correct measurments for pins. While in Tokyo last week we tried to take
measurments at a piano tuning school. The pins were in a center pin
storage box like we use here but several sizes were missing and did not
want to embarrass my host with pointing this out in front of his
students. I realize that the pins that were measured might have been in
the wrong bin as well.</font></div>
<div><font face="Arial" size="2">Also here in the states we sometimes
repin one flange that has become loose on one or both sides as well as
repin flanges that are too tight using a special set of reamers that
are exactly the correct size to do the job. We do ( well most of us )
not use the old triangle reamer that was used in the past.</font></div>
<div> </div>
<div><font face="Arial" size="2">What number is assigned to the 1.10
mm pin and to the 1.70 pin?</font></div>
<div>Joe Goss RPT</div>
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<div><font face="Arial" size="2">Hi again,</font></div>
<div><font face="Arial" size="2">Jurgen, are you telling me that you
use 25 sizes of pins?</font></div>
<div><font face="Arial" size="2">What are the size of the ones most
used?</font></div>
<div><font face="Arial" size="2">Which ones do techs carry into a
house for common repair?</font></div>
<div>Joe Goss RPT<br>
Mother Goose Tools<br>
<a href="mailto:imatunr@srvinet.com">imatunr@srvinet.com</a><br>
<a href="http://www.mothergoosetools.com">www.mothergoosetools.com</a></div>
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<div
style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-stretch: normal; font-size-adjust: none;">-----
Original Message ----- </div>
<div
style="background: rgb(228, 228, 228) none repeat scroll 0%; -moz-background-clip: initial; -moz-background-inline-policy: initial; -moz-background-origin: initial; font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-stretch: normal; font-size-adjust: none;"><b>From:</b>
<a title="pianoforte@island.net" href="mailto:pianoforte@island.net">Jurgen
Goering</a> </div>
<div
style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-stretch: normal; font-size-adjust: none;"><b>To:</b>
<a title="pianotech@ptg.org" href="mailto:pianotech@ptg.org">pianotech@ptg.org</a>
</div>
<div
style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-stretch: normal; font-size-adjust: none;"><b>Sent:</b>
Thursday, August 05, 2004 8:57 PM</div>
<div
style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-stretch: normal; font-size-adjust: none;"><b>Subject:</b>
Metric Center Pin Sizes</div>
<div><br>
</div>
List - <br>
<br>
I think German piano wire gauges are being mistaken for center pin
sizes. German piano wire sizes differ slightly from American gauges,
but Joe Goss asked about center pin sizes.<br>
<br>
German center pins are not identified by any gauge, but by their
thickness, e.g a pin with a diameter of 1.30 mm is called "1.30". Very
simple, actually. Center pins are available from 1.10 mm through 1.70
mm in increments of .025mm (.043" to .067" increments of .001") The
conversion factor is 25.4. <br>
<br>
The traditional European method of (re-)pinning uses 60cm (2 ft.) long
center pin rods. One of these days I might write a little piece on
that. If anyone is interested in these rods, visit my website: <a
class="moz-txt-link-abbreviated" href="http://www.pianofortesupply.com">www.pianofortesupply.com</a><br>
<br>
Jurgen Goering<br>
Piano Forte Supply<br>
<br>
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