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<DIV><FONT face=Arial size=2>> | ....The other<BR>> | end of =
the spectrum
would be no panel drying at all, and ribs cut/formed to<BR>> | the =
desired
radius. I am not aware of anyone that is at that end of the<BR>> |
spectrum.<BR>> <BR>> Walter.<BR></FONT></DIV>
<DIV><FONT size=2></FONT><FONT face=Arial>Really? They rib with the =
panel
equilibrated with room RH - somewhere in the 9 or 10% moisture content =
range?
And then they sell a piano in Minneapolis? Any idea how those boards =
look after
a few years and a couple hundred cycles of high to low environment RH? =
Any
increased tendency to crack?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>> | I believe most soundboard =
manufacturers
build hybrid soundboards - that is<BR>> | the ribs will have some =
radius
cut/formed into them (often the 60-foot<BR>> | radius one hears of so =
often)
and the panel will receive a fair bit of<BR>> | drying prior to =
ribbing.
Steinway even modifies the 100% compression<BR>> | crowning process =
by drying
the panel, using flat ribs, but gluing them to<BR>> | the panel in =
radiused
cauls.<BR>> <BR>> The result of this is still a pure =
compression-crowned
soundboard. (Think about<BR>> it....)<BR>> <BR>> =
Del<BR></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT size=3>Absolutely. I understand =
that. Perhaps
I chose my words poorly. I did not mean to suggest that the Steinway =
grand
soundboard was anything but 100% compression-crowned, but rather was =
pointing
out one variation of the 100% compression-crowned method: =
ribbing with
a flat rib in curved cauls, as opposed to ribbing a flat rib and =
clamping
to a flat surface.</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT =
size=3></FONT></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT size=3>Terry
Farrell</FONT></DIV></FONT></BODY></HTML>