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<DIV><SPAN class=796273404-06092002><FONT face=Arial color=#0000ff =
size=2>David,</FONT></SPAN></DIV>
<DIV><SPAN class=796273404-06092002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=796273404-06092002><FONT face=Arial color=#0000ff =
size=2>I
(try) to use the correct fit for the cauls so even if they are in place =
for
long, the sizing is "perfect" what I not-iced was that on some jobs =
where I
removed the cauls sooner, I had to use the pliers more than I like, so =
that mean
the wood had swell due to remaining moisture.</FONT></SPAN></DIV>
<DIV><SPAN class=796273404-06092002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=796273404-06092002><FONT face=Arial color=#0000ff =
size=2>A
thicker bushing cloth will always tend to come back in size and slow the =
key .
But many of the cloth sold today are totally inappropriate for bushing =
work ,
too soft and rapid wear expected.</FONT></SPAN></DIV>
<DIV><SPAN class=796273404-06092002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=796273404-06092002><FONT face=Arial color=#0000ff =
size=2>Regards</FONT></SPAN></DIV>
<DIV><SPAN class=796273404-06092002><FONT face=Arial color=#0000ff =
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=796273404-06092002><FONT face=Arial color=#0000ff =
size=2>Isaac</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT =
face=Tahoma
size=2>-----Message d'origine-----<BR><B>De :</B> =
owner-pianotech@ptg.org
[mailto:owner-pianotech@ptg.org]<B>De la part de</B> David
Ilvedson<BR><B>Envoyé :</B> vendredi 6 septembre 2002
03:25<BR><B>À :</B> pianotech@ptg.org<BR><B>Objet :</B> =
RE: key
bushings<BR><BR></FONT></DIV>
<BLOCKQUOTE class=cite cite="" type="cite">
<P align=left>When you leave the caul in for that long do you find =
you need
a tighter fit, i.e thicker bushing cloth or you end up with too much =
play? </P>
<P align=left>David I.</P>
<P align=left> </P>
<P align=left> </P>
<P align=left> </P>
<P align=left>----- Original message
----------------------------------------><BR>From: Baldwin Yamaha =
Piano
Centre <<A
=
href="mailto:baldwin@mta-01.sk.sympatico.ca">baldwin@mta-01.sk.sympatic=
o.ca</A>><BR>To:
<<A
=
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>><BR>Received: =
Thu,
05 Sep 2002 18:06:25 -0600<BR>Subject: RE: key bushings</P>
<P align=left><BR>Hi Isaac, <BR><FONT face=arial color=#0000ff =
size=2>I
usually leave the cauls a few hours, but noticed that the sizing is =
not as
stable as I like sometime.</FONT></P></BLOCKQUOTE><BR>I have also =
noticed the
same thing on field repairs using PVCE glue, some times get a recall =
for a
sluggish key.<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite"><BR><FONT =
face=arial
color=#0000ff size=2>But as I use most often heated brass cauls, =
I guess the
drying is faster (in surface anyway)</FONT></BLOCKQUOTE><BR>Bin thar =
done
dat. Still do it if I'm in a hurry. Usually on a rebuild, =
we do
every thing that is needed to the keybed, then the action analysis, to =
determine what parts to order.<BR><BR><BR>I think the big area of =
movement, is
the reaction of the water in the glue, on the key button. Leaving them =
a
couple of days, we have found no sizing is needed on the bushings, =
only sizing
the balance rail hole. This we size with a polished balance rail =
pin,
chucked in a battery operated drill, one quick pull of the trigger, =
and the
hole is sized to perfection. We size from the top down. No =
guess
work as to where the friction is coming from.<BR><BR>Key bed fitting, =
friction
control, and key fitting, is perhaps one of the most neglected jobs in =
our
craft.<BR>Regards Roger<BR><BR><X-SIGSEP>
<P></X-SIGSEP> </P></BLOCKQUOTE></BODY></HTML>