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Glassworking Processes

Elizabeth Johnson



Flameworking “Flameworking” is the process of sculpting glass in the 4000°F flame of an oxygen-propane torch. The Italian-made glass Elizabeth most often uses has a “working range” between 1,000°F and 1,700°F. In the upper part of that range, the glass can become as liquid as honey and must be constantly rotated to prevent it from dripping. Toward the lower end of the working range, the glass begins to solidify and develops plastic qualities much like clay or soft wax. The sculpture in progress must be moved back and forth in the flame to maintain it in that critical “plastic” temperature range. If the piece is allowed to get too hot, surface details will be melted away and the sculpture spoiled. If it is heated unevenly or cools too much, the sculpture will shatter apart, sending near-molten bits of glass in all directions.

Each object she makes is hand sculpted by building up the glass bit by bit; therefore no two are ever exactly alike. Variations in the surface color are achieved by carefully controlled heating and cooling, by mixing several glass colors together, or by applying vitreous enamel, which is finely powdered glass. When enamel is used, it is completely fused into the object and will not rub, flake or chip off. Any stems, such as those on cherries, are embedded into the glass and are made of solid copper wire that is unfinished or has an oxidized patina. No paint is applied to any of the objects.

View Elizabeth Johnson Biography, Artist Statement and Glassworking Process in PDF format.
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