How to use a whetstone to sharpen a knife
A craftsman from Sugimoto-hamano shows the hand technique behind a properly sharp blade.
1m 36s
Sugimoto-hamano is one of Japan's oldest knife makers, with roots in sword smithing. Here, one of their craftsmen demonstrates how to use a whetstone to hand-sharpen a steel blade. The motion is simpler than it looks, and the result is an edge that cuts cleanly with very little pressure.
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