This is a throwing knife I made a couple of weeks ago out a sheet of steel using a couple of high powered rotary tools. Sorry I don't have instructions this is my first homemade knife, but I will probably be making another knife soon and might make a full instructable out of it. Basically, I used an electric high powered rotary tool with a cut off wheel to cut out an outline I drew on a sheet of steel. I then used an air powered rotary tool with a sanding wheel to clean up and begin forming the blade. Lastly I sharpened it up and added a paracord wrap. I didn't heat treat it but I may learn how to in the future. It flys pretty well and actually turned out to be kind of a Bowie knife too, so it would be a great survival knife.