[Jewelry making - Article 00034] - Re: [Orchid] PNP paper falls off during etching

[Noel Yovovich]

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>     When I lift the silver out of the bath to check its progress the
>     PNP paper falls off part of the silver 

    When etching silver, regardless of the form of resist, the resist
    will hold on better if you pre-etch your silver for 1 minute (in
    nitric acid) before you apply resist to it. Rinse it very
    thoroughly, of course, dry it without touching the surface with your
    fingers. 

    You can touch up resist (that didn't come out right, or that lifts)
    with paint marker, an clean, dry silver. It is not very easy to
    control, especially for fine lines, but excess can be scraped away
    with a steel tool when dry. 

    In fact, you can draw directly on metal with a paint marker and
    etch. It will stay on much better, though, if you pre-etch. 

Noel
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