On 9 Sep 2006 04:53:04 -0700, "cad" wrote:

Well I may be incorrect on it being harder, but as another person said,
it is smaller. This makes it more dense and harder, to compress. I use
the wrong words sometimes and am not as eloquent as some here.

snip

Last year someone here, I think it might have been George, said something about
stored energy from "wind shakes" or something.... and that as the log dried the
heartwood sort of twisted or unwound the tension...
That ring any bells out there?
Mac

https://home.comcast.net/~mac.davis
https://home.comcast.net/~mac.davis/wood_stuff.htm