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Best Resist For Salt Water Etching. A lot of stainless doesnt oxidize much which is basically what you would be doing with salt water. Applying the Resist the parts that dont get etched This is a sheet of stickers for card making.
Salt Water Metal Etching 5 Steps Instructables from www.instructables.com
Kosher or rock salt is perfect. Etching copper at this voltage takes about 1-1 12 hours and makes a nice clean deep etch. This ink will hold up longer than Sharpie ink will.
The main one of course being electrolysis of salt which produces chlorine at the anode and hydrogen at the cathode.
Kosher salt works the best of any Ive tried. Allow a handful of cotton swabs to soak in the saltwater solution. Consider this to be the beginner of all beginners guide on how to do salt water etching on metal. Eventually it will quit working at which point you dip the other side of the q-tip in the salt water and start the process over.
