[Jewelry making - Article 00014] - [Orchid] Heat Patina on Copper

[Stephanie S .]

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    I am using a Wagner paint stripping heat gun to add a heat patina to
    Copper wire & sheet. 

    Once the piece has cooled, why do the beautiful colors disappear
    when I touch them?  It seems if I run my finger over them, they
    vanish like magic.  Am I doing something wrong?  Could it be that the
    heat gun isn't penetrating the copper as much as a torch might? 

    Let me say that I do not have the facilities to use an open flame of
    ANY type.  This is why I tried to use a heat gun. 

    Also - how can you preserve these colors?  I tried spraying a
    beautifully colored piece with Acrylic spray only to see the colors
    disappear in front of my eyes. 

Please Help.
Thank you - Stephanie

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