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<DIV><BR><FONT face=Arial size=2>> Oh, and a practical question about your
being in the CC <BR>> capital of the universe. When the RH% gets into the low
teens, <BR>> say 15%, the MC of the soundboards will be 3.5%, at or before
<BR>> which point a CC board will be flat or have reverse crowned. <BR>>
Do you have a recognized annual killer octave season or <BR>> festival
there?<BR>> Ron N<BR>> </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><STRONG><EM>Hmmm, well I like festivals, Maestro,
but will there be floats...</EM></STRONG></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><STRONG><EM> 3.5 to 4% is the emc of choice
for my CC friends. I've measured a few of these boards so far and surprisingly
they have plenty of crown, probably coming from a combination of the forced
crowning from the gobar deck and from the inner rim.</EM></STRONG></FONT></DIV>
<DIV><FONT face=Arial size=2><STRONG><EM></EM></STRONG></FONT> </DIV>
<DIV><FONT face=Arial size=2><STRONG><EM>Whereas I'm at 5%, rib supported. I
have a wood conditioning room that senses RH and opens a relay that I can
designate for humidification or dehumidification depending on the season, but in
all honesty I let her ride down to 4% this time of year rather than put my board
in a "wet box."</EM></STRONG></FONT></DIV>
<DIV><FONT face=Arial size=2><STRONG><EM></EM></STRONG></FONT> </DIV>
<DIV><FONT face=Arial size=2><STRONG><EM>I also machine a tongue and groove
joint in my planks. Del Fandrich referred me to the government's Wood Handbook,
which I read in parts. The text states that while this joint is stronger in
theory because of the additional glue surface, the effect is often negated by
poor machining. I make sure I'm getting a great joint on all five sides and
these panels feel stiffer than side grain edge glued panels. Also the tongue and
groove allows me to align the planks in such a way that you end up with a
thicker panel overall, which I don't think can be
refuted.</EM></STRONG></FONT></DIV>
<DIV><FONT face=Arial size=2><STRONG><EM></EM></STRONG></FONT> </DIV>
<DIV><FONT face=Arial size=2><STRONG><EM>Jude Reveley, RPT<BR>Absolute Piano
Restoration, LLC<BR>Lowell, Massachusetts<BR>(978)
323-4545</EM></STRONG></FONT></DIV></BODY></HTML>