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<DIV>I taking a long shot here, but - I think finger joints are only =
appropriate
at end grain joints. That way the long direction of the grain goes into =
the
fingers and all is strong. If you finger joint perpendicular to the =
grain, you
have little fingers whose edges cut across that grain and the fingers =
have no
strength. My suspicion is that a finger joint used to glue up planks of =
spruce
for a soundboard would have no significant strength increase over a =
straight,
flat-cut joint. A finger joint may be a good thing if =
good spruce
gets so scarce that our four or six-inch wide planks are not available =
in
five-foot lengths!</DIV>
<DIV> </DIV>
<DIV>Terry Farrell</DIV>
<DIV> <SPAN id=__#Ath#SignaturePos__></SPAN> </DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=Erwinspiano@AOL.COM
href="mailto:Erwinspiano@AOL.COM">Erwinspiano@AOL.COM</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, January 13, 2002 =
11:23
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: my own =
Soundboard</DIV>
<DIV><BR></DIV><FONT face=arial,helvetica><FONT lang=0 =
face=Arial size=2
FAMILY="SANSSERIF">In a message dated 1/12/2002 9:52:03 PM Pacific =
Standard
Time, <A =
href="mailto:gnewell@ameritech.net">gnewell@ameritech.net</A>
writes:<BR><BR><BR> Gregg writes<BR>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"
TYPE="CITE">. <BR> I thought that tongue and =
groove might
be a good idea long before I heard about it here. Lately I've been =
day
dreaming about finger joints. Any feelings on how that might work in =
a
soundboard situation? It seems that a finger joint would offer more =
surface
area than a tongue and groove. Call me a ponderer. =
<BR> I
would love to here from
=
</BLOCKQUOTE><BR><BR> &nbs=
p;
Greg -Finger joints will not work. Even the tongue and groove joints =
must be
positioned towards the bottom side of the panel so that they are not =
exposed
while diaphramizing. <BR> If =
you've
not ever tried to make a straight line over large lengths of wood then =
I must
tell you how difficult it is even for the best
woodworkers.<BR> Dale</FONT>
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