[Jewelry making - Article 00360] - Re: [Orchid] Enameled cab crack after setting

[Donna Wilson]

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>     I have read that a finished "jewel" can crack much later after
>     finishing successfully. 

    Alma has a really good point here. Tell us what gauge copper or fine
    silver you are using as a base, are you doming, any surface
    treatment such as rolled texture, what brand of enamels, leaded or
    lead-free...are you combining the two, technique...stencils,
    cloisonne, are you going from hot kiln to air-conditioned room,
    removing the piece from the trivet before it's completely cool,
    clean your trivits (filing off dripped enamel) so the pieces don't
    stick, etc. 

    I used to do large wall pieces, mostly arquitectural or landscapes
    with 15-20 firings and the only time I had any problem was when
    Thompson replaced some of the leaded colors with lead-free. I had
    major shattering off of enamel and learned later that you can do
    leaded over lead-free but not the other way around. 

Donna in VA
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