Soundboard EMC

[Kevin E. Ramsey]

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Terry, I don't doubt your findings, but how would you account for a =
piano going up in pitch 5 or 6 cents within minutes in an evironment of =
an evaporitive cooler going on, then.
    Could be due to the plate, strings cooling, but I'd like to know.=20
  ----- Original Message -----=20
  From: Farrell=20
  To: pianotech@ptg.org=20
  Sent: Friday, November 22, 2002 8:43 PM
  Subject: Soundboard EMC


  FWIW:

  I had posted 16 days ago about how I dried a piece of Sitka Spruce =
down to zero moisture content (MC). I went on to say that I was =
surprised how long it took to regain moisture.

  Things haven't changed much.

  Well, here we are at 16 days in my shop of 70 -75 degrees F and 45% =
relative humidity, and the little piece of spruce is now up to 6.08% MC. =
It went from 5.91% to the present 6.08% in the past three days.

  My conclusion: spruce does not take up an appreciable amount of water =
in a short period of time.

  Ain't I smart?

  Terry Farrell
   =20
  _______________________________________________
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