Stiff Black Opalescent, Rod, 5 mm - 90coe
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Bullseye Stiff Black opaque opalescent Rod approximately 17" in Length and 4-6mm in Diameter. 90coe Glass. (Approximately 18-20 rods per pound) Available for purchase in Full, Half, & Quarter Pound increments.
Rods are pulled from re-melted Bullseye Compatible sheet glass. Rod is sold in lengths of approximately 18 in (450 mm) by the pound, the half pound, and individually (approximately 18-20 rods per pound; 14 per pound for lusters). Some special production rod is sold only by the pound.
Bullseye rods are graded either as F (recommended for both kilnwork and torchwork) or T (recommended for torchwork only).
Reactive Potential
Non-reactive. Neutral.
Forms of Glass
Sheet Glass (-0030, -0050), Frit (-0001, -0002, -0003, -0008), Rod (-0576) and Stringer (-0507)
Cold Characteristics
Uniform color.
Working Notes
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.
Bullseye Compatible.
| Unit of Measure |
1/4 LB, LB |
|---|