[Jewelry making - Article 00136] - [Orchid] Tips for Etching Gold

[Woldenberg, Wendy]

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Hello,

    I am trying to etch a piece of flat sheet 14K yellow gold, and my
    first attempt was somewhat of an expensive failure. I read through
    the orchid archives on this question, but I could use some more
    specifec answers. 

    1. What is a good resist to use? I used asphaltum, and it didn't
    hold up perfectly to the acid. 

    2. Is it better to use aqua regia concentrated, or diluted with
    water (if so, what ratio?) 

    3. Should I use a magnetic stirrer and float the piece upside down
    in the etching bath, or is there another method? 

    4. Should I add heat (if using the magnetic stirrer)? 

Thank you SO MUCH,
Wendy
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