wood response to moisture

[baoli liu]

Both dry weather and humid weather can cause sticky
key,that is my experince.

Baoli Liu,RPT


--- Marcel Carey <mcpiano@videotron.ca> wrote:

> Dave,
> 
> My findings are quite the opposite. I find that key
> bushings do get
> tighter with dry weather. For the soundboard to
> react slower the
> explanation is quite simple. The soundboard is
> "sealed" being finished
> on both sides as where the keys are not.
> 
> Marcel Carey, RPT
> Sherbrooke, QC
> 
> > -----Original Message-----
> > From: pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]On
> > Behalf Of Dave Nereson
> > Sent: November 11, 2004 3:52 AM
> > To: pianotech@ptg.org
> > Subject: wood response to moisture
> >
> >
> >     I'm pretty sure I read in a recent post or
> Journal
> > article that the
> > soundboard can take a lot longer to lose moisture
> than it
> > did to gain it.
> >
> >     But then I read in an article by Susan Graham
> [The
> > Technical Forum, PTG
> > Journal, Oct. '88] that "keys stick in wet
> weather. . .
> > because the hole has
> > tightened around the balance rail pin, having
> clearly
> > gotten smaller as the
> > wood has expanded.  The reason for this is the way
> in which
> > wood takes on
> > moisture.  First of all, it takes on moisture
> three times
> > more slowly than
> > it loses it, . . . ."
> >     That's just the opposite of the what I had
> heard and
> > read before.  Which
> > is it?  Anybody know?
> >
> >
> >
> > _______________________________________________
> > pianotech list info:
> https://www.moypiano.com/resources/#archives
> 
> _______________________________________________
> pianotech list info:
> https://www.moypiano.com/resources/#archives
> 



		
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