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<p>Delwin D Fandrich wrote:
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<div dir=ltr>Does this mean that the a compression soundboard assembly
can hold crown as long as RH is held at high enough levels to sustain
internal compression ? Or do you mean to say that the assembly fail anyways...perhaps
more slowly.?</div>
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<div dir=ltr><font color="#800080"><font size=-1>No. Go to R. Bruce Hoadly's
'Understanding Wood' and study the effect of creep and compression-set.
Wood fibers that are under compression--regardless of the degree of compression--will
continue to go through compression-set. This takes place faster when the
compression levels are higher and more slowly when the compression levels
are lower.</font></font>
<p><font color="#000000">Well then what exactly do you mean by</font>
<p>"This is climate dependent to the degree that during dry periods moisture
will be drawn from the wood fibers and the panel's internal compression
will decrease. During humid periods the wood fibers will absorb moisture,
try to swell, and the panel's internal compression will increase."
<p>?</div>
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<div TYPE="CITE">One other thing... you mentioned somewhere along the line
I believe, and I think Ron has echoed this in another thread a while
back... that in a best case scenario for a compression board... the sound
can be in some sense better or more powerfull... or something of this nature
then in a non compression board..... but that that is of little use because
it is so short lived amoung other reasons... or have I mis-understood you
here.?</div>
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<div dir=ltr TYPE="CITE"><font color="#800080"><font size=-1>I've no idea
what I would have said to give you that impression, since I do not believe
it to be true.</font></font></div>
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<div dir=ltr TYPE="CITE"><font color="#800080"><font size=-1>Del</font></font></div>
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<p><br>That would be your response to Antares question about why his ears
told him the sound of a new Steinway sounded better then an old one...which
in turn sprang out of the him mentioning he had a very old instrument with
a panel that had received new ribs... and all that discussion about new
wood sounding better then old...... but I probably should re-read it all
once more to see if I can sort it all out.
<p>Anyways... thanks for your replies. Thanks also for the book tip.
<br>
<p>--
<br>Richard Brekne
<br>RPT, N.P.T.F.
<br>Bergen, Norway
<br><a href="mailto:rbrekne@broadpark.no">mailto:rbrekne@broadpark.no</a>
<br>
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