Leathering is what I call it and idk the correct term. But after sharpening a blade you drag it along a leather strap on both sides and miraculously it becomes razor sharp. The seemingly subtle motion on a softer surface makes a night and day difference of the sharpness of the edge. WHY?!? Edit: the it
In: Engineering
Lots of answers here. When you strop it you remove a long burr that remains on the edge of the blade after sharpening.
https://scienceofsharp.com/
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