Published

Blackening Lead

I am interested in blackening a limited number of small cast figurines made of lead. Do you have any hints or suggestions? Are there any commercial products on the market that will do this?
#economics

Share

Q: I am interested in blackening a limited number of small cast figurines made of lead. Do you have any hints or suggestions? Are there any commercial products on the market that will do this? V. G.

 

A: I am not aware of any commercial products that are specifically formulated for the blackening of lead. However, there are some formulations that are used to blacken pewter. Classic pewter contained a large amount of lead. Perhaps the formulations used to blacken pewter will work on lead.

One such formula is a 200 g/liter iron chloride solution. Another is dilute nitric acid. Nitric acid is an oxidizing acid and must be handled with respect. If you work with either of these formulations good ventilation is required and safety procedures must be followed.
 

RELATED CONTENT

  • Masking for Surface Finishing

    Masking is employed in most any metal finishing operation where only a specifically defined area of the surface of a part must be exposed to a process. Conversely, masking may be employed on a surface where treatment is either not required or must be avoided. This article covers the many aspects of masking for metal finishing, including applications, methods and the various types of masking employed.

  • Nickel Electroplating

    Applications, plating solutions, brighteners, good operating practices and troubleshooting.

  • Aluminum Anodizing

    Types of anodizing, processes, equipment selection and tank construction.