Warm glass

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Warm glass is the working of glass, usually for artistic purposes, by heating it in a kiln. The processes used depend on the temperature reached and range from slumping, fusing to casting.

'Warm' glass is in contrast to the many cold-working glass processes, such as leaded glass. 'Hot' glass, glass blowing or lampworking is the working of glass in a direct flame, such as for laboratory glassware and beadmaking.