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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Dean,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I had the same problem which I finally solved by heating the
keytops before I notch them. I came to believe that the keytops are too brittle.
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I put the keys under a lamp with my Dampp Chaser digital
temperature and humidity gauge laying on top of them. When they are about
80 degrees I start notching, and I move the key past the router bit VERY
slowly. Using this method I have had absolutely no chipping.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>David Weiss<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <b>On Behalf Of </b>Dean
May<br>
<b>Sent:</b> Friday, March 14, 2008 11:07 AM<br>
<b>To:</b> 'Pianotech List'<br>
<b>Subject:</b> key trimming bit<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hi
all<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
am using a Spurlock style set up to trim my keytops and am having trouble with
the plastic chipping out on the notch cutting station. I am using a 1/2 inch
spiral carbide up cut bit from McMaster Carr (27395A31). Is there a better
router bit I can be using here? <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoAutoSig><b><span style='font-size:22.0pt;font-family:"Bradley Hand ITC";
color:navy'>Dean</span></b><span style='color:navy'><o:p></o:p></span></p>
<p class=MsoAutoSig style='margin:0in;margin-bottom:.0001pt'><span
style='color:navy'>Dean May
cell 812.239.3359 <o:p></o:p></span></p>
<p class=MsoAutoSig style='margin:0in;margin-bottom:.0001pt'><span
style='color:navy'>PianoRebuilders.com 812.235.5272 <o:p></o:p></span></p>
<p class=MsoPlainText><span style='color:navy'>Terre Haute </span><ns0:State><span
style='color:navy'>IN</span></ns0:State><span style='color:navy'> </span><ns0:PostalCode><span
style='color:navy'>47802</span></ns0:PostalCode><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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