[Jewelry making - Article 00426] - Re: [Orchid] Rolling out 14K

[James Binnion]

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>     Just to add-- letting the ingot completely air cool after
>     annealing DID really help keep it soft. 

    Then lord knows what you have in that alloy. All yellow golds are
    mainly gold, copper and silver. Any yellow gold alloy will get
    somewhat to a lot harder if allowed to air cool so what ever the
    contaminant is in there is somehow negating this effect. Quenching
    can sometimes cause thermal stresses that may cause micro cracking
    that later shows up in rolling but it in clean metal will still be
    softer than air cooled material. 

James Binnion
jbin AT mokume-gane.com
James Binnion Metal Arts
http://www.mokume-gane.com
360-756-6550
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