<font color='black' size='2' face='Georgia, Times New Roman, Times, Serif'><font size="2" style="color: black; font-family: Georgia, 'Times New Roman', Times, serif; ">Hmm, Ok, I have been using homemade chasers instead of reamers, who knew? </font>
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<div><font size="2"><font face="Georgia, Times New Roman, Times, serif"> The K bit that I use to chase a Steinway 2/0 block prior to repinning with 3/0 pins manages to cut something out of those holes with the cutting edges I left in the middle of the bit. Especially down at the bottom, where there is often uncompacted pin block holes drilled for the 2/0 pins. </font></font></div>
<div><font size="2"><font face="Georgia, Times New Roman, Times, serif"> I don't know what is being sheared off the inside of the holes, but there is wood removed when I do this, even though the bit is supposedly smaller than the hole should be. </font></font></div>
<div><font size="2"><font face="Georgia, Times New Roman, Times, serif">Regards, <br>
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<div style="color: black; font-family: Georgia, 'Times New Roman', Times, serif; font-size: 13px; clear: both; "><font color="black" face="arial" size="2">Ed Foote RPT<br>
http://www.piano-tuners.org/edfoote/well_tempered_piano.html</font></div>
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<div style="color: black; font-family: helvetica, arial; font-size: 10pt; ">-----Original Message-----<br>
From: Jim Ialeggio
<div id="AOLMsgPart_0_8b6ca41d-a6bd-4e9c-8b6f-5c7a4c793370" style="margin: 0px;font-family: Tahoma, Verdana, Arial, Sans-Serif;font-size: 12px;color: #000;background-color: #fff;"><pre style="font-size: 9pt;"><tt><I have made my own pinblock reamers from bits in which I grind away all
the cutting edges for the first inch or so of the bit. It makes for an
accurate pilot without chewing a
sideways hole on the way in.
This is interesting and makes a lot of sense.
So, what exactly is the cutting action of a reamer? Is is simply a
scraping action? If so, what keeps the 1st hole's wall fibres from just
bending over rather than actually being sheared off ?
</tt></pre>
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