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Thread: Removing smelting oxides.

  1. #1
    Join Date
    Jun 2019
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    8

    Default Removing smelting oxides.

    Hi folks,

    Looking for an alternative to cleaning smelted or annealed silver before rolling, i was taught with dipping in a warmed suuphuric acid mix, is there an alternative that requires no heating.

    Steve

  2. #2
    Join Date
    Jul 2009
    Location
    Romsey
    Posts
    4,795

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    Any of the pickles that work hot will also work cold - but they take longer.
    I use pool pH down FWIW - same chemical as safety pickle (sodium bisulphate)

  3. #3
    Join Date
    Dec 2009
    Location
    Central London
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    7,454

    Default

    If you are impatient to get on, then a cheap slow cooker will keep safety pickle warm for the duration of a session. Dennis.

  4. #4
    Join Date
    Jun 2019
    Posts
    8

    Default

    Quote Originally Posted by ps_bond View Post
    Any of the pickles that work hot will also work cold - but they take longer.
    I use pool pH down FWIW - same chemical as safety pickle (sodium bisulphate)
    Might give that one a go, may I ask how long to soak, or is there a technique to knowing when to remove it, have not learnt this yet.

    Steve

  5. #5
    Join Date
    Dec 2014
    Location
    South Australia
    Posts
    1,007

    Default

    If the pickle is hot it will take from 30 secs to a couple of mins, if cold it can take 15 mins or longer, having said that, it will vary on how much residue e.g. flux or other contamination you need to remove plus
    the size of your piece, how strong your pickle is.Just check the piece until you are happy, after a while you will get a feel for it.
    Last edited by china; 27-08-2019 at 02:44 AM.

  6. #6
    Join Date
    Feb 2011
    Location
    Scotland
    Posts
    2,424

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