[Jewelry making - Article 00393] - Re: [Orchid] Casting ingots.

[Guy Audette]

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    Hi Richard Do you use an open horizontal ingot mold or a vertical
    adjustable one. The technique is a little different. If you use the
    open horizontal one, you can put a wall made from a copper plate to
    stop the flow of molten metal to make a thick ingot. Put oil then
    wipe it with a cloth and try to not heat to much the mold. If there
    is flow marks you should heat more your metal or pour it faster in
    the mold. The secret in pouring ingots is to optain the good
    temperature and to pour the metal in one regular and continious
    move. For all kind of ingot molds I never heat it, just warm it by
    placing the mold close by the crucible when heating. Put a little oil
    (kind of sewing machine one). Use a reducing flame with a clean
    crucible put a pinch of borax during the melting. 22 years of
    training students tell me these simple rules. Hope this helps 


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