etching

ambo surface

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ambo surface

Copper Etching

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Learned to appreciate the amazing beauty and versatility of copper. Have learned to etch copper using a particular ink (dye) and ferric chloride. Now need to know how to 'darken' the detail (negative) of the etching. At a recent art festival, we discovered, purchased from, and raved about an artist who worked primarily in copper. Her copper jewelry is amazing. I have been trying to get a similar look by stamping on copper, etching, and then trying to age it. I am not using the term patina per se as I know how to patina copper to produce many different blended and amazing colors (reds, greens, blues, yellows, etc). I need to blacken the negative of the etching so the image "pops", and I need to age the copper so it is not shining like a Greek polished brass mirror.


Photoetching alternative to Nitric Acid Etchant

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Hi all,
I am new to this forum but have been working in metal since 1972. . .so here goes.

I am designing a series of sterling pieces. In the past I have etched with an 8 to one ratio of nitric acid and water. The handling of the etchant and the fumes are horrendous. I have been looking for an alternative using a plating rectifier in reverse which would strip metal away instead of depositing it on the model. Does that make sense?


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