Moisture control of soundboard wood.

[Farrell]

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 Farrell

SNIP

>, but the best way to control the MC of your
> soundboard spruce is to keep it in a climate controlled environment. This
> doesn't have to be elaborate. A simple box made of plywood or waferboard
> will do. It will be easier to heat and control if it is insulated some. A
> small space heater or baseboard heater will do for heat, though I'd rig up
a
> somewhat better thermostat than comes with most of them. You're going to
> want to monitor both temperature and humidity and compare these to the
> various charts that will give you the resultant wood MC.
>
> There is one such chart listed in the U.S. Forest Products publication,
> "Wood Handbook--Wood as an engineering material." This book is available
> from the U.S. Government Printing Office or online at
>     http://www.fpl.fs.fed.us/documnts/FPLGTR/fplgtr113/fplgtr113.htm.
> If you don't have a copy of this book, you should either purchase one or
> download the pertinent chapters to your hard drive and keep them handy. In
> fact, you should read and have a fairly good understanding of chapters 1
> through 4 and chapter 9. This is pretty basic information about wood and
> wood technology. And, being the result of your tax dollars at work it is
one
> of the few publications on the internet that you can copy and reproduce
with
> impunity.
>
> Regards,
>
> Del
>
>
>