Epoxy on soundboards

[Farrell]

Oops. Yes, of course. I had not incorporated the wedging into my thinking.

Terry Farrell

>
> >Sure it would - wouldn't it? If you have a relatively dry soundboard with
a
> >coat of epoxy on the top surface, and then expose the board to a
> >higher-humidity environment, what will happen. The epoxy will slow the
rate
> >of MC change, but the board will still attain the same equilibrium MC
with
> >the environment as a similar board without an epoxy coating. If you have
> >that dry board and the wood tries to expand with increasing MC, won't the
> >top surface of epoxy (or the top 1/10 of a millimeter of epoxy-saturated
> >wood) be under tension because that presumably would not be able to
expand
> >as much as the wood just below it?
> >
> >Terry Farrell
>
>
> Only if the crown went higher than the board was wedged when the epoxy was
> applied. I don't think that's going to happen with the string load on it.
> Once the string bearing load is applied, it will be, and should stay,
under
> compression unless it deteriorates. No?
>
> Ron N