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<DIV>Hello Ron and all.</DIV>
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<DIV>Let say we want to make a vertically laminated long bridge with =
nine 3.6 mm
thick laminations. That will give you a bridge about 33 mm wide. The =
figure
below represents unbent laminations in the area of the troublesome =
(for me
anyway!)dogleg. What about laying up the laminations as below, having =
let's say
five (whatever in reality) laminations be continuous through the dogleg, =
and the
others terminate on either side of the dogleg. Bend gently (never any =
more bend
needed than in the sections not at the dogleg), glue, and then trim
the normal-looking dogleg curves with bandsaw and sand. =
You've
got a large overlap at the dogleg, I can't imagine there would be any =
loss in
strength - not torturing the maple laminations, perhaps there would even =
be an
increase in strength. As long as we are not interrupting the "circle of =
sound"
(heaven forbid!), I should think this would ease the task of =
dogleg-making,
allow the use of thicker laminates, and give you complete freedom to =
make the
dogleg dimensions (curve radii) any size you want - you will be =
simply
cutting these cosmetic curves rather than having the curves originate =
from the
integral bend. Heck, be a radical - leave them squared-off as plate
configuration allows!!!!!!!!!</DIV>
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<DIV>Waddaya think?</DIV>
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<DIV>Terry Farrell</DIV>
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<DIV>----- Original Message -----
<DIV>From: "Ron Nossaman" <<A
href="mailto:RNossaman@cox.net">RNossaman@cox.net</A>></DIV>
<DIV>To: "Pianotech" <<A
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>></DIV>
<DIV>Sent: Saturday, April 19, 2003 10:01 AM</DIV>
<DIV>Subject: Re: Bridge Construction Method</DIV></DIV>
<DIV><BR></DIV>> <BR>> >Short of interrupting the "circle of =
sound", is
there any good reason that <BR>> >each vertical lamination in a =
long
bridge root needs to be one continuous <BR>> >piece of wood? Is =
there a
problem if they are two or three pieces to gain <BR>> >some other
advantage? (I've got something up my sleeve.)<BR>> ><BR>> =
>Terry
Farrell<BR>> <BR>> Other than making it easier to control the =
laminate
stack while handling it <BR>> and pressing it into the cauls, I don't =
know of
any. But then, you could <BR>> always horizontally laminate one from =
that
scrap too.<BR>> <BR>> Ron N<BR>> <BR>>
_______________________________________________<BR>> pianotech list =
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