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What you need:
  • Spray bottle
  • Vinegar
  • Salt
  • Measuring cup
  • Tablespoon
Copper garden ornaments are popular, especially when the surfaces are weathered to the green finish (copper carbonate), known as verdigris. Years may pass before untreated copper naturally evolves from tarnished to verdigris. This technique will patinate copper in a few days. Add 3 Tbs. salt to 1 cup of vinegar. Stir briskly to dissolve the salt.
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Scour the entire surface of the copper with #00 fine steel wool to remove any protective coating that may have been applied to prevent a patina from forming. Next, spritz the copper with your solution 4-5 times over an 8-hour period.
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Look at the copper ornament the next morning. You should see some signs of verdigris. If the surface of the copper is not as green as you would like, give it another round of spritzing. Repeat as necessary.