Join Date: Jul 2008
Location: Dickinson, Tx. / Somerville, TX
Building furniture and barns out of green wood uses a slightly different technique than kiln dried wood. With green wood, they take advantage of the wood shrinking and holding tighter around mortise and tenons and notched and pegged stuff.
With air drying, the general 1" per year is used as a rough guide. From what I remember, which is not much, air drying in most of the US will only get down to about 13% MC.
There are 2 types of water/moisture in the logs. One is free water and the other is bound water. Picture the end of a board as a bunch of soda straws. The free water is the water that runs through the straw and readily dries off - comparatively speaking. The bound water is in the actual cells that make up the straw and this is the stuff that wont normally dry without a kiln. You can disregard some of this if you live in the desert.
Anyway, that is how I remember it so feel free to shoot me down.
Retired woodworker, amongst other things, Sold full time cruising boat and now full time cruising in RV. Currently in Somerville, Tx