How is it possible that steel can sharpen steel?
For example this honing rod type sharpener [https://www.walmart.com/ip/J-A-Henckels-International-Fine-Edge-Pro-9-Sharpening-Steel/49056156](https://www.walmart.com/ip/J-A-Henckels-International-Fine-Edge-Pro-9-Sharpening-Steel/49056156) is made of steel whereas the this one is made of ceramic [https://www.walmart.com/ip/J-A-Henckels-International-Handheld-Knife-Sharpener/861314185](https://www.walmart.com/ip/J-A-Henckels-International-Handheld-Knife-Sharpener/861314185)
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If you zoom way in on the edge of a knife that’s in need of honing, you’ll find that it became dull because the edge folded over. Honing steels are designed to fold the sharp edge back out so that it can cut things effectively again.
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