View Single Post
Old 08-15-2020, 04:27 AM
Sean Jones Sean Jones is offline
Registered User
Join Date: Jan 2016
Location: Staffordshire U.K.
Posts: 26
Sean Jones is on a distinguished road
Surface metallic copper

I made a nice turquoise with copper in my wire melter but got a reddish film on the outside of the vessels. Itís only obvious where Iíve gathered over an opal but it looks terrible.
I can only assume itís metallic copper reduced by blocking. Is this a common problem or just poor blocking technique?
I had 42g of red copper oxide in 25kg of critalica (5.4g per 7lb). Made the blocks out of local cherry wood.
Reply With Quote