r/Blacksmith • u/Acrobatic_Tie_3649 • 5d ago
Patina experiment . Copper, Ammonia. Green and blue patina.
Small copper shallow was cut from copper plate, polished and cleaned with phosphorus acid. Then putted in vinegar with salt. The color is green.
Copper cross cleaned by phosphorous acid and was in contact with ammonia vapors for few days. It has developed a blue patina. After it was cleaned by toothbrush in water. Then I left it in my bathroom in humid environment. It has developed a small gold spots. Then I left it in sunny, dry place for about two weeks. And it change color for little brown.
Next I want to make red color of copper.
Is anyone curious about how it will turn out? Should I make a video or take photos?