After many sharpenings with a stone, the thin part of blade will be worn away. Marugg blades are designed to have a hammered edge. Grinding wastes metal and makes your scythe wear out sooner than it needs to! People who earn their living with a hammer (carpenters and blacksmiths) will prefer the hammer and anvil set. It is less expensive and allows them the pleasure of seeing the blade take shape as each blow of the hammer lands in the perfect position. The Peening apparatus allows folks of ordinary skill to put a clean hammered edge on a blade thats been heavily used.