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Stable. No color shift.
Compared to Black (000100), Stiff Black (000101) has a slightly higher viscosity, meaning that it is a stiffer glass. In most kilnforming applications, Black and Stiff Black can be used interchangeably. Kilnforming applications where differences between Black & Stiff Black might be noticed include working with elevated drop ring molds and kilncasting.
Stiff Black was originally developed for glass blowing purposes such as the Roll-up Technique. Using Stiff Black in kilnformed panels for this application creates a more uniform viscosity, which is easier to control.
Made from crushed, screened, and magnetically cleaned Bullseye Compatible sheet glass.
Frits are versatile and can be used in:• Pâte de verre and kilncasting• Kilnforming, including “glass sketch” and “painting with light” techniques• Torchworking and blowing, to create colors and patterns on surfaces.