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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>For those who are curious here are some
pictures of my notch cutting set up. The way the jig is set up the router is mounted
underneath the table. The key is passed over so that the bottom of the bit
trims the long side of the notch and the side of the bit trims the short side
of the notch. I used an “upcut” bit because the router is upside
down (so it is really “downcut” now) to pull chips away from the
work to below the table.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Because of the way the key edge passes
longitudinally past the bit it doesn’t seem like upcut or downcut would
make any difference. We get breakout no matter which direction we approach the
bit.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I am using about a $200 Bosch router so it
should be good, but I’ll check the wobble with a dial indicator.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Sounds like warming them first is the
solution. This list is fantastic. Thank you all for sharing so generously.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoAutoSig><b><font size=6 color=navy face="Bradley Hand ITC"><span
style='font-size:22.0pt;font-family:"Bradley Hand ITC";color:navy;font-weight:
bold'>Dean</span></font></b><font color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoAutoSig style='margin:0in;margin-bottom:.0001pt'><u1:PERSONNAME u2:st="on"><font
size=3 color=navy face="Times New Roman"><span style='font-size:12.0pt;
color:navy'>Dean May</u1:PERSONNAME>
cell 812.239.3359 <o:p></o:p></span></font></p>
<p class=MsoAutoSig style='margin:0in;margin-bottom:.0001pt'><font size=3
color=navy face="Times New Roman"><span style='font-size:12.0pt;color:navy'>PianoRebuilders.com
812.235.5272 <o:p></o:p></span></font></p>
<p class=MsoPlainText><u1:PLACE u2:st="on"><u1:CITY u2:st="on"><u3:place u4:st="on"><u3:City u4:st="on"><st1:place
w:st="on"><st1:City w:st="on"><font size=2 color=navy face="Courier New"><span
style='font-size:10.0pt;color:navy'>Terre Haute</span></font></st1:City><font
color=navy><span style='color:navy'></u3:place></st1:place></u1:CITY> <u1:STATE u2:st="on"><st1:State
u5_x003a_st="on" w:st="on">IN</u1:STATE></st1:State> <u1:POSTALCODE u2:st="on"><st1:PostalCode
u6_x003a_st="on" w:st="on">47802</u1:POSTALCODE></st1:PostalCode></span></font></st1:place></u1:PLACE><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Farrell<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, March 14, 2008 11:31
AM<br>
<b><span style='font-weight:bold'>To:</span></b> Pianotech List<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: key trimming bit</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'>Dean, I don't know a darn thing about trimming keytops, but
I have used spiral router bits a fair bit. If the router is above the keytop,
shouldn't you be using a down-cutting spiral bit to minimize breakout? A
downcutting bit should leave a smooth cut on the top (router side) surface at
the potential sacrifice of the lower surface (although if there is wood bonded
to the underside of the keytop, I should think that there will be no breakout
on the underside of the keytop).</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'>Terry Farrell</span></font><o:p></o:p></p>
</div>
<blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>----- Original Message ----- <o:p></o:p></span></font></p>
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<p class=MsoNormal style='background:#E4E4E4'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>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></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoAutoSig style='margin:0in;margin-bottom:.0001pt'><U1:PERSONNAME u2:st="on"><font
size=3 color=navy face="Times New Roman"><span style='font-size:12.0pt;
color:navy'>Dean May</U1:PERSONNAME> </span></font><o:p></o:p></p>
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