[Jewelry making - Article 00045] - Re: [Orchid] Button or No Button

[Bill Churlik]

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Jim,

    This is going to be interesting. I have been following your input.
    Now it looks like I need to rethink my approach to casting. I was
    taught to use 30% to 50% more metal for the button. I have always
    been careful about flow, turbulence, and well placed sprues. I have
    also used thicker sprues as a practice. The idea being that they
    would also function as a reservoir. The idea about the metal in the
    flask freezing before the button was in place never occurred to me.
    When I have screwed up and put most of the metal other places than in
    the flask, I still got good castings. I have always considered that
    button metal to be a "butt" saver in those cases as the extra metal
    let enough still get where it was needed. 

    So far I believe that the metals being talked about are assumed to
    be silver and gold. Do the same principals apply to bronze on the
    small scale? Say under 50 dwt? 

    I love learning new tricks and better ways to do things. Thanks for
    the insights. 

Bill Churlik
wechurlik AT earthlink.net
www.earthspeakarts.com

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