[Jewelry making - Article 00310] - Re: [Orchid] Casting torch ingots

[isgoldwks]

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    I've always 'torched' my ingot mold with fuel only first(ie:
    acetylene) with produces a very smutty carbon that coats the mold
    well.This allows the molten metal a 'cushion' between the iron ingot
    mold and helps the metal flow much better. But it's a nasty job! Use
    good ventilation! I also heat mold with a torch a bit and angle
    reflected flame toward ingot mold while torch melting metal. A 'cold'
    untreated pour may trap air and 'spit' out metal and is potentially
    dangerous. Hope this helps 

Thomas Blair
www.islandgoldworks.com 

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