Lampwork wouldn't be lampwork without the glass. One vitally important aspect of glass is Coefficient of Expansion (COE) which is a measurement of the rate that the glass expands and contracts when it is heated and cooled. If two different glass COE's are mixed the incompatible glass will crack regardless of annealing.
There are exceptions to this rule such as mixing a small amount of furnace glass in a bead. Furnace glass has a high lead content and allows a bit more flexibility in the glass.
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Glass also comes in powdered form called enamel. I use enamel to decorate bead surfaces. |
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The light orange background of this bead was created by dusting the hot bead with enamel then melting it in. |
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This set of beads was created by rolling the soft glass in frit then melting it in and pressing the bead into a pillow shape. |
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