I make my pens through out the year in my shop so the temperature, humidity very by season. After I make my pens, I put them into individual display boxes and I store the boxes above my workshop, which is a heated area that never goes below 58 degrees. I have also stored them in the house because I thought the temperature was affecting cracking. I take these pens with me to gun shows where I sell them along with my other items (gun and fishing rod racks, game calls, and other turnings). It is very difficult to keep the temperature constant due to changing environments. I use the blanks as received and the only wood that does not crack is any variety of maple (Birdseye, figured, wavy etc). I have looked at the wall thickness and it does not make a difference if the walls are thick or thin.
I wonder if I were to use a moisture meter to control to moisture, but than what moisture content would I use to get the ideal results?