Wolf: Good question! I etch a Blade as follows: Polish to an absolutely clean mirror finish. Clean with acetone. Submerge the blade in a 3 part water to one part ferric chloride. (I use Radio Shacks Archer Etchant) My solution is a little old so the blade remains in the etchant for 30 minutes. Fresh solution will work faster. Experiment to determine the degree of etch you like for your blade. Remove the blade from the etchant solution and submerge it in a super asturated solution of Tri sodium phospahte and water to stop the etch. Wipe the blade off and again wash with soap and water. Then buff the residue off using Brownells 555 grey on a loose muslin Buff. Read what the etch has to say. Enjoy!