Thursday, February 18, 2010

Using Cupric Sulfate as a Zinc Patina for Sculptures

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More examples of zinc patina in this post.

1. Clean metal with wire brush to get off all zinc oxide.
2. Paint on a thin layer of Cupric Sulfate (while wearing gloves) Get Cupric Sulfate here at Rotometals
3. Wrap in thin layer of saran wrap so it does not evaporate
4. wait 3 hours.
5. brush off the high spots with wire brush.
6. Three coats of clear coat.


  1. You can achieve much the same result with vinegar or HCl.

  2. sweet. don't have HCL but vinegar would be cheap. Gotta try it soon.


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