Etched Copper With Blue PatinaI made some more etched copper earrings. This time, I decided to forego giving them my usual liver of sulphur treatment in favor of turning them blue using vinegar, salt, and ammonia.
After etching, I cut my disks, sanded the edges, drilled them, and polished them with 3M polishing papers. I didn't tumble polish them because I think patinas stick better when the metal has a bit more "tooth" to it.
I strung the links on monofilament (fishing line) and dipped them in my copper pickle vat. (I use vinegar and pickling salt rather than Sparex, etc.) I then suspended them over ammonia dampened paper towels in a lidded plastic takeout container. It wasn't long before they turned a lovely shade of blue. After rinsing and drying, I lightly sanded them to bring out the raw copper highlights and the etching detail. I then sealed them with spray lacquer and Renaissance Wax.
I chose Czech glass beads with a Picasso finish that matches the raw copper highlights on the etched disks and the earrings were finished with my handmade ear wires.