Watch that bark pattern VERY close when you choose a tree to cut. Most of it spirals slowly as it reaches upward, the wood will spiral as well and be no good. The bark is scaly, look at the gaps between the scales as they climb up, be sure they don't twist more than a few degrees over 6 feet in length. Also, wait until May to cut any. The sap is down now and getting bark off clean is a total pain in the boot. In the spring you can peel it off clean with your hands.