My first project on the forge was a knife made from an old file. I annealed the steel, shaped the knife with an angle grinder, grinding wheel, and files, then hardened and tempered it. I hardened the blade in warm oil (mix of canola and new 10w-40) then tempered it in the oven @ 400 degrees for 20 minutes. I still need to do quite a bit of experimenting with tempering. I recently finished up the walnut handle and a sheath is in the works.