Earlier in the year I designed and created an egg cup in my Hollowware course.
When it was first made it had the most amazing and unusual purple patina. (Pictures of the egg cup in an earlier post can be seen here.)
Now, a couple of months later it has faded to an aged icy turquoise blue. The high polish on the 'tentacles' has remained a beautiful dark copper colour. The blue patina was achieved by placing the copper with a green patina in a lidded bowl full of wood chips soaked in ammonia. The fumes of the ammonia turn the green patina blue!
And below are some of the designs that were discarded in the designing process.
I would still like to make them....... maybe one day!
Here are some websites on how to make different coloured patina's using ingredients generally found at home:
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