heavymetal
Luke Atkins
- Joined
- Feb 17, 2013
- Messages
- 88
- Reaction score
- 76
Does anyone on here know how to clean copper off gold. Some of the gold I have melted down has come up with a coating of copper and I would like to clean it off some how. I was thinking maybe an acid of some type. I have been using borax to get rid of impurities but it doesn't seem to get rid of the copper. Any help on this matter would be great.