(no subject)

[Erwinspiano at aol.com]

JD
  I of all folks highly respect your opinion &  experience  but what it 
sounded like you were  saying I took from you  quotes



you wrote
I take the soundboard out of a piano, take off the bars, leave  it in 
a dry atmosphere for a day or two, shake it like a thunder-board and  
record what happens.  I then expose it to 90% humidity, make thunder  
with it the next day nd note the difference or sameness.  According  
to this new science, there will be a marked difference in the quality 
of  the thunder.  According to my experience, the board will be as  
floppy after the moisture uptake as before.  How could I expect it to  
be stiffer or more flaccid?!
  True without the ribs/bars

The lack of  stiffness of the assembly in the direction across the 
grain of the board  is supplied by the bars, by whichever construction 
method is used.
  Ok this is what I took issue with.  Not completely  by the bars. It's the 
bars plus the wood under compression. You agreed with  me that the stiffness 
can also be caused by wood cell compression yet it seemed  like you were saying 
a few M.c. % points didn't make that much  difference..  This is what forms 
the Compression  crowned boards we all speak of.
 
you wrote  
Of course it will!  Nobody is arguing with that.  If you  think I am 
then you must regard me as an idiot and can't imagine why you  bother 
discussing the point with me.
  I enjoyed the post.  Yes many things  work
 Dale




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