Mors Kochanski’s knife use teaching aid. The “Try Stick” has developed an underground following. it is approximately an inch to inch and a half in diameter. One carves various types of carvings that would commonly be used in woodcraft/bushcraft, though some are more to showcase ones ability to wield a knife. There are many beautiful examples floating around the net, from woodcrafters who have demonstrated their ability and prowess with a knife. Note Mark Emery of Kepis Bushcraft.
Ever heard of the "Sharpie Method" when it comes to knife sharpening? If you're starting out in knife sharpening and are wonder if you're doing it right, here's a simple trick to see if you're on the right track. http://www.blademag.com/blog/4-steps-to-perfect-freehand-sharpening