On 7/30/2013 5:57 AM, dadiOH wrote:
Suppose you have a green - REALLY green - board 10" wide and 2-3' long; you
cut a 1" wide groove long ways through the center, stopping 2-3" from each
end. What's going to happen to that groove once the board is bone dry?
Narrower? Wider? Nothing?

Well, drier certainly. Wood shrinks as it dries. OK you can plan for
that, kind of. What you can't account for is shape changes: cupping,
bowing, and worst of all twisting. Take a look at
http://www.motherearthnews.com/diy/w...#axzz2aXDupDop
or better yet:

http://tinyurl.com/kxg4xze

Good luck and good night.
mahalo,
jo4hn