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Thread: Liver of sulphur

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  1. #1
    Join Date
    Jul 2017
    Posts
    48

    Default Liver of sulphur

    I'm making copper cuff links, they are enamelled on both sides but I would like the edge of the copper to be blackened.
    Does liver of sulphur go really black, will it wear off?

  2. #2
    Join Date
    Sep 2014
    Posts
    2,068

    Default

    Yes it can go really black but yes it will wear off in exposed areas.
    It is mostly used for highlighting raised areas by darkening in the grooves where it is protected from wear.

  3. #3
    Join Date
    Jul 2017
    Posts
    48

    Default

    Thank you, I thought as much!

    What do people use on those lovely silver pieces that are oxidised black all over? Does that wear in time?

    Sorry for all the questions - I do have a few books but I can search endlessly sometimes!

  4. #4
    Join Date
    Dec 2009
    Location
    Central London
    Posts
    8,248

    Default

    Yes, high spots become highlights. It's the antique effect.

  5. #5
    Join Date
    Sep 2014
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  6. #6
    Join Date
    Oct 2014
    Posts
    55

    Default

    If you're using it on rings it will wear off in the first week if it's a totally smooth ring and being worn everyday. The wearer will have the upkeep of re-dipping in the sulphur. However, you can use a clear coat product such as Protectaclear. I used to use that on my copper pieces and it worked really well if you did two coats. That being said, it basically gives it a plastic coating which may not be to everyone's taste.

  7. #7
    Join Date
    Jul 2010
    Location
    The Netherlands
    Posts
    414

    Default

    Hi Scarlet, you could consider black rhodium plating but I have no idea how / if copper would plate. On silver you get a good solid dark grey almost black, lasts longer than los, but like all plating will eventually wear depending on the thickness.
    Poor old Les

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