[Jewelry making - Article 00020] - Re: [Orchid] Hard wax fixture?

[Jesse Brennan]

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    The gallium suggestion leads to the Bismuth based low melting metals
    Check out : 

	http://www.neymetals.com/eutectic-low_melt.htm

    You should talk to them . They would be your best source. They  could
    be used as a cast or machined mandrel and some are available as wire
    that possibly be made into other  sizes etc. These are considered to
    be solders but are quite hard. I am sure they will work as a mandrel
    as they are used in  press dies. Since they are solders you 
    probably should consider using the surfaces  a little contaminated
    to prevent contamination of the fine metals. The lowest melting
    alloys might  be easily removed in a hot ultra sound. pickle
    cleaning should also leave a good surface. 

Jesse 

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