Article Info
Back in Black
MJSA Journal (mjsa.org)
Article about antiquing Sterling Silver
Article Summary:
Mastering the Art of Blackening Silver Jewelry
Introduction:
- The article discusses the process of blackening silver jewelry and provides tips for achieving the desired results. Key points include the importance of starting with a clean surface, choosing a blackening agent such as liver of sulfur or Black Max, and applying the agent with various methods. Safety precautions, such as wearing protective gear, are emphasized. Different blackening agents have varying application techniques, and the article suggests specific procedures for liver of sulfur and Black Max. After blackening, it is crucial to avoid removing the coating during the finishing process. The article also highlights alternative methods, such as using Dormant Oil Spray, and concludes with advice on storing and disposing of blackening solutions.
I. Surface Preparation:
A. Start with an Ultraclean Surface:
- Emphasizes the necessity of a pristine surface before blackening silver.
- Oils or polishing compound residues can hinder the bond of the coating.
- Recommendations include using electrocleaners or a combination of ultrasonic, steam, and denatured alcohol for thorough cleaning.
B. Finish Jewelry Before Blackening:
- Stress on completing the jewelry to its final finished state, including setting stones, before initiating the blackening process.
- The importance of having the desired finished surface across the entire piece before blackening.
II. Choosing a Blackening Agent:
A. Common Blackening Agents:
- Liver of Sulfur: Heating to 150°F, dipping or applying with a brush, and allowing it to dry.
- Tips for dipping process to achieve deeper penetration and varied color tones.
- Short working life after mixing; use it promptly.
- Black Max: A tellurium hydrochloric acid compound for instant blackening.
- Submerging or applying with a toothpick, cotton swab, or brush.
- Works best on matte finishes; precautions for skin absorption.
- Other Concoctions: Creativity beyond traditional agents, such as using Dormant Oil Spray.
- Various unconventional methods, like using fruit fungus preventer or hard-boiled eggs.
III. Finishing Touch:
A. Rinsing and Polishing:
- After blackening, rinse gently without removing the blackened coating.
- Caution against using ultrasonic cleaners or tumblers that may react with the coating.
- Polishing with Renaissance Wax for the desired final shine.
- Application and rubbing off repeatedly for optimal results.
IV. Safety Measures:
A. Protective Gear:
- Always wear eye protection, masks, gloves, and other necessary safety gear.
- Ensure a well-ventilated workspace when handling blackening agents.
B. Storage and Disposal:
- Store blackening agents away from tools to prevent steel rusting.
- Dispose of spent solutions with consideration for Ph levels (e.g., bringing Black Max to a Ph of 5).
- Use testing strips to check Ph levels and add baking soda or vinegar accordingly.
Conclusion:
- Encouragement for jewelry makers to embrace the art of blackening silver, with a variety of techniques and agents to choose from.
- Following the guidelines and tips outlined in the article can help avoid common pitfalls in the blackening process.