[Jewelry making - Article 00268] - [Orchid] Red vitreous enamel on copper

[Karla Maxwell]

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    Red is a tough color to fire direct on copper because of the
    love/hate relationship with the oxides formed during firing. 

    Does anyone out there in Orchid Land know of a transparent red that
    has a high success rate on copper? 

    I know that the best color is achieved over flux but that is not an
    option. The enamel thickness is restricted and the flux would be
    exposed during the grinding steps. Also, I must work with the
    existing copper base, I do not have the option to change metals. 

    I recently tried Schaurer transparent rubys but was very
    disappointed with the white grainy contaminants left in the fired
    surface [brand new purchased enamel, 5 different reds, same
    results]. Is there another brand that I can count on???? 

    I've also tried the Thompson non-leaded reds but their firing times
    are so long that I risk burnout of other colors used on the pieces. 

    Hoping someone has the answer I've been pursuing for 4 years. 

Karla Maxwell.........in not so sunny S. California
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