[Jewelry making - Article 00423] - Re: [Orchid] Hallmarking and solder

[nick]

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    UK solder is basically a mixture of silver and fine brass. Carat gold
    solder varies in composition but has the same gold content as the
    gold. The reduced melting point is normally achieved by having a
    quantity of cadmium and tin in the alloy which would preclude you
    from making your own as they are more volatile metals than silver
    etc and Cd is particularly unhealthy for you. You can make your own
    higher silver content solders by alloying you own using pure silver
    and bronze or brass. Dont use plumbers or electrical brass as they
    contain lead, try gunmetal. Will the end result be any better than
    commercial solder? If you work with Britannia or enamelling silver
    the answer can be yes but otherwise one has to wonder. 

Nick
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