Flour Mill/Grind Stones Real Stone vs Ceramic Corundum ...
Oct 29, 2012· Some people use sandpaper taped to a piece of plate glass or a flat granite tile working from course (say 400) to fine (say P2000 wet). Other people use a wet stone which is basically a block of adhesived together Aluminum Oxide (the main ingredient/abrasive in most sandpapers). Others (including me) prefer natural stones to sharpen with.