We’re commemorating the first day of winter with this frosty aspersorium. There are two wa
We’re commemorating the first day of winter with this frosty aspersorium. There are two ways to achieve this effect. The first method calls for a parison of hot glass to be plunged into cold water and withdrawn quickly. The thermal shock creates fissures in the surface, and these impart a frosted appearance after the parison has been reheated to allow the forming process to continue. In the second method, chips of colorless glass, picked up on a gather (a gob of molten glass) as it is rolled across a flat surface, fuse to the bubble as it is reheated. Ice glass was first made in 16th-century Venice, where it was often blown into a mold and decorated with colored trails. Aspersorium, Venice, Italy, 1600-1699. 2000.3.5. -- source link
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