[pianotech] FW: laminated ribs again

[Delwin D Fandrich]

I have found that using reasonable care in selecting the various laminations the
mass and stiffness of the resulting laminated ribs is consistent enough for
practical use. It is far more consistent than using ribs coming from random
sources. Cutting all of the ribs from a given cant may result in slightly more
consistency but -- as you say -- the tendency of some is to "look at these
things with a microscope when a magnifying glass will do." In this case the
magnifying glass is adequate and considerably better than the raw eyeball of the
past. 
 
Consistency is only one benefit of laminated ribs; at least with the process I
use and present in my seminars. I glue up the laminated ribs in carefully curved
cauls so the crown radius is molded into the structure of the rib. It is a
process I find to be both effective and elegant. 
 
ddf
 
 


  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of
erwinspiano at aol.com
Sent: January 28, 2009 5:51 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] FW: laminated ribs again


Still ,now mater how you slice the deck, shuffle the cards or glue up the ribs.
There will be some variations.  Just not as many. How to measure that & what to
do with it is another matter.
  My point is I think the tendency is to look at these things with a microscope
when a magnifying glass will do.  Know what I mean?
  Dale


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