[Jewelry making - Article 01062] - Re: [Orchid] Melting dish

[R . E . Rourke]

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hi helen

    Harbour Freight Tools has a set of 3 bonded graphite (platinum heat
    safe) crucibles, or cuppels ( given that they contain about 72gms.
    of metals!) and are straight sided,so tongs would be required. for a
    back up set,they are great to have for about 7 US dollars for the
    set. If you like I can find the order number..also Contenti has a
    wide variety and some on sale at present..(melting dishes only of
    fused silica,with no burno style rear pour hole..I like the pour
    holes for two reasons: 

    1) they allow you to aim quite well the stream of molten metal at
    the mould while keeping the metal covered with an oxide-absorbing
    flame..great bright tough ingots are the result 

    2) they are cheap enough ( and its a good practice to keep one for
    each metal used )..and some refineries will accept the metal
    containing slag (Cooksons being one of them!)- simply by enclosing
    the entire used crucible in with your bi-annual or annual refining
    order.and in keeping the metals separated,one can avoid the cost of
    assay!)..anyway..if you'd like more info ( like a flux to use for
    gold casting and reclaimation.) write me off list. 

R.E.Rourke
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