AgplusAu
22-12-2017, 01:24 PM
Hi - I cast a leaf about 2 inch long using sunny bronze clay - fired it for 30 mins on steel mesh over a camping stove. It was so black I then put it in dilute sulphuric acid pickle to clean it up. What happened then was awful - the piece disintegrated and turned the acid blue.
Two questions: why did it go so wrong?
Can I use the acid for pickling sterling silver now or will it copper plate anything I put in it?
PS I have successfully cast other items using PMC silver clay - have never used the bronze before this though
Two questions: why did it go so wrong?
Can I use the acid for pickling sterling silver now or will it copper plate anything I put in it?
PS I have successfully cast other items using PMC silver clay - have never used the bronze before this though