In my last article about my choice for the best all-around grafting knife I said I'd cover some other knives I've used. The key to a good grafting knife is its ability to be sharpened to a razor edge and to hold that edge. A dull knife takes more energy to cut with and thereby reduces control. Modern metallurgy has come a long way in the last few years. They have developed some exotic metals that are formed from powdered metal and then tempered (hardened) with a cryogenic treatment. These are then sharpened using diamond stones. Even with such advances as these, today's knives are nowhere as sharp as the flint pieces our knuckle-dragging forbears used.
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