bullseye opal not fusing

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This topic contains 2 replies, has 2 voices, and was last updated by  Mary Kay Nitchie 2 months, 1 week ago.

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  • #10491

    Jojo2018
    Participant

    Hi everyone. I’m new to this forum, and new to fusing. I really wanted to try this so I bought a microwave kiln kit to start with. It came with fiber paper , dichroic glass, some millefiori, frit, and bullseye opal glass… All marked as COE90. I’ve used the dichroic and millefiori at 900wats (my microwave max power) starting with 2 minutes and then in 60 and 30 second increments and it all fused beautifully. Anyway the problem was the opal glass. Tried it at 900w on its own starting with 3 minutes and although there was some red glow , it quickly faded and the fiber paper turned brown. Then another minute etc, but the paper got browner and the glass didn’t fuse, so I just gave up. Should I try a lower wattage, or times or should I just go for a different glass? Not sure what I am doing wrong. Thanks for  reading, Jo

    #13772

    Jojo2018
    Participant

    II think it probably needs more time, but since the fiber paper turns brown doesn’t that mean its dangerous? Help

    #14427

    Mary Kay Nitchie
    Participant

    Hi Jojo,

    I think that your opal glass needed either more time or a higher temperature. The fiber paper turns brown as the binders are burning out. These binders are burned up and the paper turns white again at the process temperature for the glass.

    Mary Kay

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