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#1
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Copper ruby
Ran across this patent, they add a small amount of bismuth oxide to the formula. Anyone try this?
Manufacture of ruby glass |
#2
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It's curious. Bismuth is really a heavy metal right there with lead. It also uses cyanide. It also wants to use stannic, not stannous oxide which is an opacifier and not a reducing agent.
Honestly, I think black tin will yield better results. Bismuth also is not cheap. If anyone tries it, let us know.
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#3
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The boro melters use it, I think. There's some stuff to learn from what they are doing.
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WWUD? Think for yourself. |
#4
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I think it's the zircon. Cyanide? no..
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