BE - 0101 Stiff Black Opal Stringer
Threads of glass pulled from re-melted Bullseye Compatible sheet. For use in kilnforming or torchworking.
Stringers come in 0.5 mm (“Fine Line”), 1 mm, and 2 mm thicknesses and are approximately 17.75" (451 mm) long. They are packed in clear plastic tubes that are 18" (457 mm) long and 0.75" (19 mm) in diameter.
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.