Knap-In Sat., Nov. 24, 9 a.m.-4 p.m. A knap-in is a gathering of craftsmen who chip flint to replicate arrow heads, spear points, knives, and other implementsthat have sustained, fed, and clothed the native peoples for thousands of years. Some of the best knappers in the U.S. will demonstrate how the ancients made tools, and how this has become a beautiful and collectablemodern art form. There will be flint and chert from around the U.S., but some of the most beautiful will be Ohioâï¿½ï¿½s official gem stoneâï¿½ï¿½Flint Ridge flint from central Ohio. See techniques used to take a lump of rock and turn it into a working implement. You can even try it yourself. Free, with finished examples available for purchase.