While there are lots of knife sharpeners on the market to save you from such a fate, sharpening stones have been used for millennia with the earliest proof of them being used dating back 3.3m years.
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How to Sharpen a Knife on a Wet Stone - How to Get an Extremely Sharp KnifeLearn the proper technique to sharpen a knife on a whetstone and achieve an extremely sharp edge. This step-by-step guide ...
The Wenquan Paleolithic site in Ruzhou, Central China's Henan Province, has yielded a collection of Acheulean tools, ...
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