Also, part of the issue is that the temps burn off minor alloying agents (small bits of zinc) thus INCREASING Au purity. i.e. "softer ring"
18k gold = 75% gold, 25% not. The 25% (silver, etc.) needs flux. Can use boric acid, but not perfect replacement.https://twitter.com/ArmatusRebellio/status/725671861967691776 …
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@MorlockP Ah, the not Au parts It's all easy. Except for the details.
End of conversation
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