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<DIV><FONT face=Arial size=2>I've been de-flowered. Looks like a Bosey. I can't
quite get all the details from the pictures. The photo showing the 3 lams makes
it look like there all going the same way. I'm assuming they're 90. Do you glue
them up flat, I mean, you could glue up a crown with no ribs, like the bottom
panel would act as ribs. No, that's not right, the grain would have to be
opposite the top panel. But, I would think less rib support would be needed if
the panel were glued up in a dish. What do I know? I said something stupid in
another post to Jude earlier I have to go correct, about not worrying about
shear failure. Then I remembered all those ribs that come loose, now isn't that
a shear failure?</FONT></DIV>
<DIV><FONT face=Arial size=2>Have fun in the sun, Terry. It looks like you
sanded thought to a glue line in one photo, I can't tell, maybe I'll invite
myself over something, I'm good at that. Ask Dale E. or Richard
Wheeler.</FONT></DIV>
<DIV><FONT face=Arial size=2>Fenton</FONT></DIV>
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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=mfarrel2@tampabay.rr.com
href="mailto:mfarrel2@tampabay.rr.com">Farrell</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, January 29, 2008 12:59
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Laminated panels
(Farrell)</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial>Fenton Murray wrote:<FONT face=Arial><BR>> Wouldn't
missing this detail in the glue up be less of an issue than missing <BR>>
it in a solid panel. One big advantage of laminating is to reduce the effect
<BR>> of flaws in individual laminations. One disadvantage to laminating a
panel I <BR>> would think would be the glue up process itself, the
application of even <BR>> pressure over a panel would require a serious
press, I haven't seen it done. <BR>> An amateur attempt could definitely be
a failure.</FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT face=Arial></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT face=Arial>Or a first attempt could bring good
success! Look at the pictures below. Consider your eyes virgin no more
Fenton. Now you have seen it! Plastic bag, vacuum pump, hose, power, a
little magic dust and you're done! 15 psi perfectly evenly applied to every
square inch of panel. This simple setup applies a total of about 30,000 pound
of clamping pressure to the panel face. That's like parking 5 or 6 big SUVs on
the panel! Serious, yes. Complicated, no. Just like we did the laminated
ribs in the class demonstration in Rochester - only
bigger!</FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT face=Arial></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT face=Arial>I agree with you regarding minimizing
flaws in wood by laminating - not only will one reduce the effect of any flaws
present, one can also do a better job of identifying small flaws (knots, pitch
pockets, insect damage, etc.) and eliminate those pieces.</DIV>
<DIV><BR></DIV></FONT></FONT>
<DIV><FONT face=Arial>Terry Farrell</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
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<DIV><FONT face=Arial>Tapering at the tail - you can see the two
offset grain directions.</FONT></DIV>
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