[Jewelry making - Article 00651] - Re: [Orchid] Ferric Chloride etching

[nick]

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    I think your suspension idea is sound, any technique that keeps the
    metal in a constant contact with the etchant is good, especially one
    that will allow you to stir the fluid without touching the metal.
    Putting it in face up is more likely to encourage air bubbles to
    stick to the surface (but you will be able to see them) but there
    isnt much in it. When we etch metallurgical samples they are always
    immersed face down and suspended but commonly we do this for
    electropolishing and we need to connect an electrode which is
    otherwise insulated so just do it automatically for everything. 

Nick
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