[Jewelry making - Article 01262] - Re: [Orchid] Enameling on Argentium?

[Bill Bedford]

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>         I assume from your mention of "hardenable silver" that you
>     _don't_ mean Argentium, correct? 

    I've said before it was the Johnson Matthey Hardenable alloy 

>         I don't have any technical data on Argentium's shrinkage rates
>     but I have heard that some "hardenable" silvers contain significant
>     amounts of nickel and/or magnesium and have higher than normal
>     shrinkage rates. Might something similar have happened to you? If
>     you could specify what alloy you were using that would great. 

    This had nothing to do with shrinkage. The cracking was most likely
    caused by age hardening. 

    Having talked to Peter Johns this morning, I am convinced that
    Argentium silver will not fail in the same way. However I suggest
    that there needs to be a largish corpus of work produced be fore I
    am completely sure that Argentium is 'safe' to be used with enamel. 

Bill Bedford

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