[Jewelry making - Article 00026] - [Orchid] Brown patina on copper

[Donna Blow]

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    I have been using Rio's red-black for achieving a brown/black patina
    on copper, with decent results. However, the last two pieces I worked
    on had definite, very noticable blue tints. They were acceptable in
    the context of the piece, but not something I want to see in the
    future. Is there something I am doing to cause this, or is this just
    what I should expect in using this product?  Also, if anyone has
    another commercially-prepared brown patina to recommend, I would
    appreciate hearing about it. 

thanks again,  
Donna

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