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What is the electrolyte for making black marks on stainless steel?





June 18, 2010

I have used NaCl, HCl, KCl and copper sulfate as electrolytes and can get nice deep etch but no colour. Does anybody know the right electrolyte?

Barry Rea
Hobbyist - Frankston ,Victoria, Australia



July 20, 2010

Try to change to AC current .
Good luck.

Cair Shishani
Khair Shishani
aircraft maintenance - Al Ain, UAE


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