If the material was dried properly to begin with then the cells have collapsed enough to remain relatively stable.
I have read that kiln dried wood will reabsorb moisture from the surrounding environment. That is my conundrum. I search for kiln dried wood from local sources, sometimes I will see it cheap and I don't get it because I can't/ don't have a stable /environmentally controlled area to store it in.
About 8-10 months ago, I built an all oak storage cabinet from wood I had purchased from a local supplier. Planed it, joined it with dominoes, made raised cabinet panels, all that. I was going to put it in an upstairs bedroom. I was fabricating in my basement(I am trying to move into a garage, because of the dust). The first hint of problems was when I was assembling my piece. The doors had to be sanded extensively to fit into the box. It was measured/cut properly, and I expected some sanding but not like what I had to do. Any way, after putting doors on and standing the piece up after a couple of weeks I noticed more space when doors were closed in areas I had to sand. I also put magnets on door, and base of cabinet to keep it closed, and in summertime it stays closed and in winter time at times it pops open(overpowering the magnet). Obviously, I am getting wood movement and this cabinet is now still in my basement as I am embarassed to put it up stairs.
Did I improperly choose the wood I used? Should I just buy from a commercial retailer?