Pecking and grinding is the key to unlocking some of the most useful tools you can create from stone such as axes, celts, adzes, and chisels . In this process a stone is found that a hard, fine grained stone, and free of fissures and cracks. In many cases we will then knapp them using block on block, hard hammer stones, and wooden billets. We use the knapping to establish a rough shape and then begin with the pecking. Pecking is done with a stone that is as hard or harder than the stone you are pecking. The pecking is used to bring the stone into a symmetrical preform. Once it has been roughed out then the process of grinding the stone on a flat slab of sand stone begins. We add sand and water to help abraid the surface of the stone. Grinding is used to establish and sharpen the bevel all the way down to finer stones. What you are left with is a beautiful and functional tool that will allow you to effectively take down trees, shape and reduce material, and chisel.