The Frankenhammer build manual was created to assist blacksmiths, knife/ sword makers, and metal-smiths of all types, with building a heavy duty, reliable mechanical power hammer. These step by step instructions are the product of many hours of research and development along with trial and error to ultimately build a machine that has been tested, used and proven. The end result has been a DIY power hammer that is hard working while designed to last a lifetime. See the original on YouTube by searching "Norm Tuckers power hammer"