Home Architecture Talk
How can I turn copper to a greenish tone?
Does anyone know how can I give copper that green effect as if it was old? It has to be a quick procedure since I only have one week (it's for an architecture model). Thanks! I have already tried vinegar, some acid wines and hydrogen peroxide. This last worked out well but the tone was more red than green.
Public Comments
- I think the greenish layer comes when it is oxidised. Try putting copper articles in vinegar. I think it will work.
- put it in an atmosphere rich in CO2 and water like near plants
- youre trying to make copper (II) carbonate. the reaction takes place in the presence of water, carbon dioxide and oxygen, it will usually take place very slowly, but im sure if youre able to find or create an environment where those conditions prevail, the reaction will go much faster. I really dont know if there is any kind of catalyst to speed up the reaction. You could also just try to find a penny in the condition youre looking for, and you might also want to know that currently pennies are being made of only 2.5% copper which is just the plating, the core is zinc. pennies from before 1982 are 95% copper. and by the way dont use hydrogen peroxide, you may be making it a little green, but youre actually producing more copper oxide which is the red color you got.
