Moisture control of soundboard wood.

[Erwinspiano@AOL.COM]

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In a message dated 1/24/2002 2:00:43 PM Pacific Standard Time, 
mfarrel2@tampabay.rr.com writes:


> Terry writes
> 
> For spruce that has been kept in a climate controlled shop (70 to 80 
> degrees
> and 40 to 55% RH), i.e. not stored outside in the rain, when gluing on 
> ribs,
> etc. when you have your panel in the heated box to get its moisture content
> down to 6% or so, how long do you commonly need to keep it there for it to
> reach equilibrium - so that you can be sure it is at the desired MC? (Boy,
> that was a mouthful!)
> >>>>>>>>>Terry
>      Given the specifis as you outlined them above I would consider  a 
> minumun of  48 hrs or so. It also depends on how high the temperature is in 
> the hot box.  If  it was sitting outside in the rain the answer is along 
> time. If it was sitting around in ambient 70% R.H. I would give it at least 
> three 24 days at reasonable heat& R.H. level to reach the desired E.M.C.  
> .Whats the hurry. Just be sure. 
>    Wood takes on moisture 7 times faster than it realeases it due to cell 
> structure.
>           >>>>>>>>>>> Dale Erwin


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