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<DIV><FONT face=Arial size=2>Thanks Roger. I thought you might have some sort of
fancy method of measuring the clearance of an existing keypin. I'm doing just
about the same thing that you do - I use the brass cauls from Pianotek when I
ease a set of keys. They also sell a little power regulator - forget what they
call it - a reostat maybe - to control the temperature of the iron. You can dial
in the perfect temperature - not too hot and not too cool. For lubrication
I take a pipe cleaner, fold it over a couple times to increase it's thickness,
dip it into the vat of powdered teflon and insert the pipe cleaner into the
mortise and rub the teflon into the bushing. I've done this on a few
very-high-use (cruise ship piano bar - talk about abuse!) Yamaha C3s with
excellent long-lasting results.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Terry Farrell</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV><FONT
size=3>Ric is right' it is touchy, feely kind of thing if using key easing
pliers. How ever I use accurate brass cauls mounted in a 40watt
soldering iron. For American made pianos .147" for the balance rail, and .150
for the front rail.<BR>Japanese pianos. .135" BR and .137" for the front
rail. Available from Pianotech.<BR>Do not let the iron get too
hot. The tool will lay the nap of the felt down very nicely.<BR>A thin
coat of Protech grease wiped on to the pins will make the bushing
friction come down to the 1-2gm range.<BR><BR>Regards Roger<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite">--- Farrell
<mfarrel2@tampabay.rr.com> wrote:<BR><BR>> Two questions: How do
you go about measuring key<BR>> bushing clearance? And how much key
friction does<BR>> these specs commonly yield?<BR>> <BR>> Terry
Farrell</FONT></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>