[Jewelry making - Article 00178] - [Orchid] Fine gold colouring on lower carats

[James Miller]

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    A warning to orchidians using the chemicle method of Potassium 
    Nitrate/Alum/Salt, 

    Firstly this must be done in a fume cabinet as the fumes are toxic,
    second the best colouring is achieved when the article is secured on
    copper  wire and suspended in the froth of the boiling liquid
    mixture, removing every 30 seconds and washing until the correct fine
    gold colour is achieved, another tip  is if you require two different
    colours of gold, say a pale  yellow coloured 18ct against the fine
    gold background, the section that you  want to leave pale yellow can
    be masked out with powdered plaster mixed with a standard fish glue,
    this will set hard and mask out the area needed to be left pale
    yellow, and when the colouring is completed the masking will soak off
    if  left for a while in water, this is a method I used in the past
    making 18ct gold  English Field Marshal's Batons. 

James Miller FIPG.
England
JMDesignFIPG AT aol.com

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