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<p class=MsoNormal><span style='color:#1F497D'>Ed:<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>How old are these Steinways with
0.162” front rail pins? <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>dp<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>_______________________<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>David M. Porritt, RPT<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>dporritt@smu.edu<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<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"'>
caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] <b>On Behalf Of </b>A440A@aol.com<br>
<b>Sent:</b> Tuesday, July 31, 2007 10:08 AM<br>
<b>To:</b> caut@ptg.org<br>
<b>Subject:</b> Re: [CAUT] Bushing cloth thickness<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Geneva","serif";
color:black'>Fred asks, <br>
<br>
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Geneva","serif";
color:black'>Do you use cauls different from Spurlock's standard sizes? I
find they require considerably thinner cloth than .053. <<<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Geneva","serif";
color:black'><br>
For Steinways, I use the stock felt with spring clamps
on the balance rail, and, usually, .162" cauls on the fronts.
For max. longevity, I try to avoid thick glue and heavy clamping pressure, as I
feel that it basically turns the back of the cloth into an inflexible matrix,
leaving less actual cloth to absorb the force of keys hitting the pins. <br>
I once mixed up some hide glue, very thick, and began gluing the various felts
to wood. I then thinned it down, and glued the same felts. Then,
thinner yet. It appeared that the thick glue captured more of the
felt when pressure was applied, effectively rendering the "felt" to
be thinner while supported by a much thicker glue/felt base. It also made
it more difficult to remove. <br>
Since I am now rebuilding actions I did 20-25 years ago here at Vanderbilt, I
really enjoy the ease of removing backrail cloth, damper felt, upstop rails,
etc. that I glued with thin hide glue so long ago. <br>
hope that helps,<br>
regards, <br>
<br>
<br>
<br>
<br>
<br>
<br>
<o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Geneva","serif";color:black'>About humidity effects, It seems like
the felt is a bigger factor, as high humidity yields sluggishness. The idea
being that felt will swell, closing the gap, while the gap becomes wider due to
expansion of the entire key (or button). I guess if there is crushed wood,
though, that would tend to swell in high humidity, also closing the gap (kind
of like what I imagine happens with pinblocks and loose pins).<br>
Regards,<br>
<br>
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Geneva","serif";
color:black'><br>
<br>
<br>
<br>
<br>
<br>
Ed Foote RPT<br>
</span><span style='font-family:"Arial","sans-serif"'><br>
<br>
<br>
**************************************<br>
Get a sneak peek of the all-new AOL at
http://discover.aol.com/memed/aolcom30tour<o:p></o:p></span></p>
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