[Jewelry making - Article 00045] - Re: [Orchid] Casting diamonds in place

[Thomas Janstrom]

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    You might find that the diamonds will burn out during the
    casting/annealing process. The time frame is just so much longer than
    for investment casting metals, yes the initial burnout is about the
    same length of time, but the casting (when the glass will flow) is at
    a much higher temp than for metal casting (most glass will flow at
    between 1200'F [real slow flow rate] to 2200'F [glass blowing temp])
    and then you have to anneal the piece this can take a few hours to
    days depending on cross section and mold thickness. 

Good luck.
Cheers, Thomas.
Janstrom Designs.

PS. We also do glass art; cast, fused and slumped. But no flame work!
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