Soundboard drydown for installation

[Jude Reveley/Absolute Piano]

  ----- Original Message ----- 
  From: Erwinspiano at aol.com 
  To: pianotech at ptg.org 
  Sent: Tuesday, January 22, 2008 10:43 AM
  Subject: Re: Soundboard drydown for installation

   With the Sitka that you are using your boards stand a way better chance of surviving than the Much softer varieties of spruce such as the white boards that Or Eastern spruce.  At 5% emc when ribbing and crowning ribs you have a great sounding piano with less opportunity for damage.


  5% is currently my ideal. Without adding humidity right now, I can get 4% without even throwing my boards into a hot box.
    I have other thoughts about the crowned bridge stuff.  Maybe there issomething to it that we just can't quantify.  Yes I know the idea has been thoroughly shot down on list & we can agree to disagree but I can think of one board I did that had a real sparkle to it when I did this.  Not only that but the board set right into the piano & the trebles & bass corners didn't require the requiste stress to get them down on the rim. Yes there is a slight bending stress that is introduced along the grain but is that a bad thing.....  Is it a positive thing?  Perhaps

  Actually I'm fascinated with the idea of the crowned bridge, I just don't understand the point and I blame that on my own density, but it doesn't mean I'm closed or won't change my mind as I attain more experience. Obviously, as Ron states, I am aware of cross grain crowning as a result. You haven't glued in a board without dealing with that first hand.

  Best,

  Jude Reveley, RPT
  Absolute Piano Restoration, LLC
  Lowell, Massachusetts
  (978) 323-4545







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