If you remember anything about knife sharpening, let it be this: A harder surface can sharpen a softer surface. Find a material harder than your knife, and it’s possible to hone an edge.

As this video points out, common materials can be used for knife sharpening in a pinch. Car windows, rocks, other knives and more are demonstrated. One not included, but cited often for alternative sharpeners, is the bottom of a ceramic coffee mug.

Learn more about the science behind sharpening in this knife maintenance download from BLADE, a sister publication.

And if you prefer more modern sharpening systems, Gun Digest recommends this 5-Stone GATCO kit.


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