Wood

[Richard Brekne]

Delwin D Fandrich wrote:

> > I have it on dietic authority that wood looses its reactionary behavior to
> > climatic and anti climatice variations in ambient atmospheric conditions.
> I
> > thought that was the same thing.
>
> And this authority is? And the context is?

Ah come on guys... I was kidding around a bit with words... but then you knew
that ... or at least it looks like you did from the paragraph below. And


> I'm not at all sure it does "[lose] its reactionary behavior to
> climatic...variations in ambient atmospheric conditions." If you are
> referring to the maxim that, compared to a fresh, new soundboard, an old
> soundboard reacts less to changes atmospheric moisture content, this is due
> to the amount of compression-set that has taken place in the old board,
> i.e., the amount of wood cell damage that has taken place over the years.
> Not the mere fact that the wood is older. In my experience old wood that has
> not been (that is, has never been) held under stress and has freshly
> machined faces pretty much reacts the same as recently cut, but equally dry,
> wood of similar species and grain character.
>

Yes... ok.. you answered my question nicely and I know better what to look for
as I read along. I misunderstood this... thought it applied to wood in general
but it only applies to wood under compression stress. Thank you kindly.


> As we continue to refine our epoxy-saturation soundboard coating technique
> the results are promising enough that I would have to say, yes, epoxy coated
> soundboards have at least some potential down the road.

This is just a coating... no way of ( or pehaps reason either ) to penetrate the
wood fibers ? Doesnt epoxy get kind of brittle ... as in it doenst like being
bent ... I'm sure you have thought of these kinds of things... just interested
in what you came up with.

> Besides this, dimensional stability can easily be achieved by laminating
> thin veneers together to form panels of whatever thickness is appropriate
> for the task at hand. There is no technical reason why soundboards &
> bridges, keybeds & keyframes, bellyrails & bellybraces, etc. cannot all be
> made out of suitable laminated stock.

Well... it way really key frames I was origionally irritated with. I've often
wondered why they dont use ply for this... Or perhaps MP3... that highly
compressed stuff they use for speakers often these days.

>
>
> Del
>

Thanks for the reply Del.

RicB

--
Richard Brekne
RPT, N.P.T.F.
UiB, Bergen, Norway
mailto:rbrekne@broadpark.no
http://home.broadpark.no/~rbrekne/ricmain.html