plating, anodizing, & finishing Q&As since 1989
"Antiquing of copper surface"
I am a fashion designer and I wish to know how to make copper surface to patina blue green and also brown at home.
Thank you,Asif Mistry
- Mumbai, Maharashtra, India
Green for copper/copper alloys:
200 gm ammonium chloride
200 gm ammonium carbonate
1 lit water Can be sprayed or brushed on object!
For best results solution must be used on black to brown ground colour
(5 gm copper sulphate
50 gm potassium permanganate
1 lit water-hot immersion/
90 C/or 10 gm potassium polysulfide/
20 gm ammonium chloride/
1 lit water- use only fresh solution!).
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