[Jewelry making - Article 00410] - Re: [Orchid] Article: Minimal Metalsmithing

[R . E . Rourke]

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>     And remember, PMC+, when fired at 1650 for 2 hours is equal in
>     density to cast fine silver. 

    Elaine, I do disagree on this point:PMC simply, because of its
    structure is not in any way conventional metal but particles of fine
    silver ( or gold of various karats) that cannot possibly have the
    same density and /or structure as crystalline.999 silver no matter
    how sintered. The particles will never compact and recrystallise as
    fine silver or high karat gold does without the kind of hydrothermal
    pressure, we in our studios, are unable to generate - unless one has
    millions of dollars of funding to dump into the appropriate
    equipment to be able to accomplish that recrystallisation and diamond
    manufacture, as they require related and similar heat and pressure.
    PMC,by nature, will never have the workability of conventional
    metals as it is particulated and recycled industrial waste that
    simply -coagulates - is probably the most easily understood way to
    describe what happens after the sintering process with particles in a
    modified state of recombination. 

    This is not to offend people that are developing new and different
    applications for the product, but a matter of the science of
    metallic structural integrity or lack thereof as regards metal clay
    products. 

R.E.Rourke
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