An oversimplified overview of fusing & slumping
1) Art glass, AKA fused glass, or warm glass, is made from specially formulated glass which expands and contracts at the same rate. I use Bullseye brand COE 90 glass. Compatible glass comes in many forms including powder, dichroic glass, stringers, rods, and sheets.
2) The glass bits are heated to around 1480 degrees in a kiln, until everything fuses together. Glass kilns have computer controlled temperature gauges. Frit (glass powder) paintings require multiple firings as colors are built up in layers.
4) Some pieces are placed in a mold and heated to 1250 degrees for them to slump into a mold to create a three-dimensional object. Molds can be made of ceramic, stainless steel or any heat resistant material.
5) Pieces can be painted with vitreous enamels, traditional stained glass paints and/or glass lusters. These paints must be fired to set, but after firing they are part of the glass and will not fade or chip. Colors are often built up in layers with multiple firings.
The glass that’s inset into the box at right began as vanilla sheet glass. The background is frit (powdered glass) and vitreous enamal paint. The quail was also painted with enamels.
© 2016 Stacey Alysa Dennick, all rights reserved