Blacksmithing: making billhook knife

I hand forge a billhook with no power tools. I only show the forging process - no heat treat, no handle, no sheath. Just forging the blade into shape with treadle hammer and hand hold hammer. Open the full video description for more information. The billhook have convex center grind on the curved side and chisel grind on the other side. Made from leaf spring (spring steel) from a car. The plan was to make it and use it on future bushcraft trips - but I don't like the design with two knifes in one blade. Thought I may would - but no. So I will not finish it and use it in future videos. I am woking on another design I like a lot better. _________________ A few quick questions: 1. What "power hammer" is that? Treadle hammer and here is a video only about the hammer https://www.youtube.com/watch?v=Nmru3hXj47U _________________ Video gear: Nikon D7000, Nikon 50 1.8, Røde videomacro, iMovie. _________________