I think I am on the right track at resolving the Copper Art Clay breaking mystery. From looking at my pieces, I’d say that they weren’t fired enough, that is, that the metal wasn’t sintered because there was not enough heat. Since copper sinters at a higher temperature than silver, I will fire another piece until it becomes redder than I am used to with silver, which shows a salmon color when fired, and I will also fire torch it longer than 5 minutes.
It was very disappointing to have those 2 pieces break on me, especially because now I have to wait until I get another order of copper clay. I might get a new kiln or a SpeedFire Cone system to fire more copper pieces that way. We’ll see…
I have my fingers crossed and will post results here soon.