![]() Every bday,christmas, anniversary, my wife/children get me a new one. I have been collecting Case knives for many years. I have done this with mother of pearl,natural bone, wood and multiple other high end handles offered by Case. If I think to, I will give this a try with a blade blank that's already been HT'd and see what happens. Since you are not actually etching the steel in the DW, it may not enhance this effect. Plus part of the reason Hondo is wanting to etch is to enhance the edge-quench differential. While that practice (dishwasher) might produce the effect you want on the steel, it will play heck with most any handle material. This takes practice to get right so don't try it on a good blade until you've worked the process out on some scrap steel. If you are really going for that "aged" look, mustard etch followed by a dip in muratic acid. Also you can use the vinegar etchant later to stain sheaths or wood black.the "vinegaroon" reacts with the tannin in either to make them go to a soft black. You only have to let one blade drop to find out why. Tip - put a piece of rubber in the bottom of the glass container. Both will stain your fingers so wear rubber gloves. Also vinegar is easier and safer to dispose. If you leave Ferric uncovered in your shop it will rust all your Fe based metal. Go by the thrift store and get one of those tall glass vases or spaghetti jars for you etchant. Ferric will sneak up and keep etching/rusting the blade while you are not looking if you don't. ![]() ![]() In either case make sure you thoroughly kill the etch with baking soda solution or amonia and follow with soap and hot water wash. It will exploit all the scratches and pits, if you forged the blade or if you used less than high grade 1084 (some from a certain supplier - not Aldo - had thousands of micro pin holes after etching). ![]() Not to argue with Eli, but I'd never put a blade in FeCl3 and walk away. The FeCl3 is more aggressive unless diluted quite a bit. You can leave it in over night with no worries. The vinegar etch is slower and more controlled, I use a 60wtt bulb in a gooseneck lamp to warm mine and keep it warm. There's another thread here about that problem. Any scratches left in the blade will only get bigger and darker when you etch the blade. ![]()
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