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<DIV><FONT face="Arial Special G1" color=#0000ff>Comments =
interspersed
below:</FONT></DIV>
<DIV> <SPAN id=__#Ath#SignaturePos__></SPAN> </DIV>
<DIV>> > It is also reversible =
for the
next guy who has to get the board out <BR>> > of the piano or =
Maybe you.
Can you imagine having to clean a rim joint <BR>> > that was =
coated with
tight bond, bulduc or some other kind of glue? </DIV>
<DIV>SNIP</DIV>
<DIV>> > Dale =
Erwin<BR>>
<BR>> I wonder how necessary the consideration of reversibility is in =
soundboard <BR>> work. </DIV>
<DIV>SNIP</DIV>
<DIV> </DIV>
<DIV><FONT face="Arial Special G1" color=#0000ff>Of course, keep in =
mind the
only joints that might arguably need to be reversible is the =
bridge-to-panel
joint and the soundboard-to-rim joint. Any reversibility issues =
regarding
laminating ribs or the rib-to-panel joints just don't =
apply.</FONT></DIV>
<DIV><FONT face="Arial Special G1"></FONT> </DIV>
<DIV><FONT face="Arial Special G1">> </FONT> Maybe we should =
be
considering knocking the ribs off of these old <BR>> boards, planing =
the
finish off, and using them as stock to laminate up the <BR>> rib sets =
for the
new panels. After all, that old panel was the "soul of the <BR>> =
instrument".
Why not put it to good use in it's next incarnation?<BR>> <BR>> =
Ron
N<BR></DIV>
<DIV><FONT face="Arial Special G1" color=#0000ff>I haven't tried =
this on a
soundboard that was destined for a piano, but I have made up several =
test pieces
this way (six-inch wide panel with two laminated ribs kind of thing). It =
is of
course more labor intensive - easier to just fell a tree and cut from a =
nice big
piece (but then some of us prefer to ride a bicycle rather than drive a =
Lincoln
Navigator). And you run into some drawbacks such as limited lengths and =
holes in
the panel spruce (for bridge screws, nose bolts, etc.). However, one =
thing I
want to do in the future is to make up some test laminated ribs that =
have
interior laminates made up from shorter pieces - the pieces will =
have a
shallow scarf or two somewhere along their length. I've done some of =
this type
of construction with some of my jigs and test boards and never noticed =
any
difference in performance, but I need to do some very careful loading =
and
deflection observations of ribs over some length of time. My suspicion =
is that
it will work just fine with no observable loss of strength.</FONT></DIV>
<DIV><FONT face="Arial Special G1" color=#0000ff></FONT> </DIV>
<DIV><FONT face="Arial Special G1" color=#0000ff>IMHO, the extra =
effort involved
would be a reasonable sacrifice to offer up to the Sitka goddess =
for all
that she has provided mankind.</FONT></DIV>
<DIV><FONT face="Arial Special G1" color=#0000ff></FONT> </DIV>
<DIV><FONT face="Arial Special G1" color=#0000ff>Terry =
Farrell</FONT></DIV>
<DIV><FONT face="Arial Special G1" color=#0000ff></FONT> </DIV>
<DIV><FONT face="Arial Special G1" color=#0000ff>Terry
Farrell</FONT></DIV></BODY></HTML>