Copper Patina Question

[PassinBy]

I see quite a bit superconductor used on custom knives.

Here is my question: I want to see how they age, any patina pics available? Also Anyone seen LSCF bronze develop patina as well?

 

[mete]

Copper in general turns brown as an oxide , black if exposed to sulfur, or green if exposed to outside elements [ copper carbonate IIRC].

 

[PassinBy]

come on, someone got to have some pics to share?

 

[pvicenzi]

Go into your basement and look at the pipes.

 

[mete]

The cheap wallboard from China that had huge amounts of sulfur turned all the pipes and all copper and brass in the houses black !! Made people very sick also.
Not common but I have seen oxide that was fairly intense red !
If you want to make patina there are lots of recipies for that especially from Japan.

 

[Wolf_1989]

I use a lot of copper. Especially copper cones. I patinate them by dousing them in bleach and then I just leave them outside in the elements to oxidize.

If you corrode copper just right, you can clean it up lightly with a rag and have the effect of something really old.