The DMT Diafold comes in either coarse and medium or medium and fine grit combinations. There are one grit models too. I'm thinking the coarse and medium may even be better for hard use military field applications. Remember, to sharpen this way, hold the blade still in your holding hand that rests on your leg while sitting. Use the stone like a file to stroke at the angle you need over the bevel of the knife.Do not move the knife while sharpening. Look at the edge and see where you are removing steel, this will tell you a lot. Sharpening is a steel removal process. Turn the knife over and work on the other side, feel for the wired edge that tells you that major sharpening is done. When you percieve the wire edge from top to bottom of the edge, use the fine side and make a few strokes on the edge at a barely incresead angle. This will at least start the wire edge off and you should have a nice aggresive edge to work with. Check out
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