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Easy process for stonewashing a stainless knife blade with Ferric Chloride and a cardboard tube!By Bjorn Jacobsen, Oct 2022Etching blades is something usually done with damascus steel. The etching affects the different steels in the damascus at different degrees, creating the visible patterns between the different types of steel that makes up the damascus. For instance 15N20 with 2% nickel is resisting the etch more than 1084, creating a more shiny layer.But also single steel / monosteel blades …