Did you create this rough shape yourself, or did you have it custom made?
I bought the annealed ATS-34 steel from K&G in Arizona. The bar of steel measured 1/4 X 1 1/2 X 36 inches. I cut off six inches of it and ground away everything that didn't look it belonged there with this...



It'll get a little more done than a dremel...

If you wanted to make a custom kife, K&G has kits that can be finished up with hand tools. You may want to get a catalog from them.
http://www.knifeandgun.com/