[Jewelry making - Article 00474] - Re: [Orchid] Bronze problems

[Jeff mack]

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>     What kind of sand are you using? 

    It's premixed casting sand.  I think I bought it from Thunderbird
    Jewelry Supply. 

>     What temperature is the bronze when poured? 

    Not sure.  I don't have an immersion pyrometer.  I waited until it
    looked like a nice little lake of molten bronze, fluxed, then pored. 

>     Are you using a clean crucible? 

    It's nearly brand new, and has only ben used for bronze. 

>     Are you venting your wand work? 

    I guess not.  How do I do that? 

>     Can you take a picture or the pits and send it to me? 

    I'll try to cast something and take another pic this weekend.  I
    ground and polished the last piece. 

>     Is the metal new or scrap or used? 

    New Oster Bronze D from Contenti. 

Thanks!
Jeff


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