[Jewelry making - Article 00694] - Re: [Orchid] Unresolved issues with casting

[Steve Ramsdell]

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    The red in the crucible is from the copper in sterling as has been
    stated before.  It may also be from other materials that settle out
    when the silver is melted.  I was told, long ago, that when the
    silver is shot into the flask, the liquid from the center enters
    first and the top and bottom arrive last.  This would leave a lot of
    the junk behind. I would not use the same crucible for gold.  It may
    have some residue that you don't see and that can change the karat
    value of the gold.  It is best to use one crucible for each metal
    cast. The torch problem is a money problem.  You need more push than
    the little torch can give.  Look into an acetyline air torch that
    can be found at plumber supply stores.  Some were called
    Presto-lite, there are other brands.  If you want to use the little
    torch, heat the metal from a back corner and keep the flame steady
    until that area melts.  As it melts move the flame forward towards
    the flask.  The flask will warm the metal at that 
    end to help start it.  Good luck.  Steve Ramsdell

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