Wissmach Black (color code 96-02) is COE 96 kiln glass, a dense jet black opaque in a thin 2mm sheet, tested for fusing compatibility.
Appearance Deep, even black from edge to edge with a glossy surface and no visible streaking or tonal drift. It blocks light completely, so it reads as pure silhouette on a lightbox and as a solid ink black on the table. The 2mm thickness keeps stacked projects thinner and saves weight in layered work.
Striking Wissmach lists its Opaque and Prisma colors as capable of striking, so the fired black can settle marginally deeper and denser than the raw sheet. With a color this dark the shift is subtle, but a sample chip fired alongside your project settles any doubt.
Working notes Wissmach’s recommended full fuse schedule for a 6mm project made from two 3mm layers: heat at 300 degrees F per hour to 1225 F and hold 30 minutes, then 600 per hour to 1460 F with a 10 minute hold, cool as fast as the kiln allows to 960 F and hold 1 hour, then 100 per hour down to 700 F. These numbers come from Wissmach’s current published firing guidance. They are guidelines, not guarantees. Kilns differ, so fire a small test piece first.
Reactions Black is not flagged on Wissmach's COE 96 reactive chart. It sits next to any color in the line without forming a reaction line, so it pairs freely as an outline, base or silhouette color.
Format and sizes Sold as a 2mm sheet in 8" x 10.5", 10.5" x 16" and 16" x 21" sizes. Choose your size from the options on this page.
Fusing and compatibility Tested compatible with other Wissmach COE 96 kiln glass. With glass from other makers, a matching COE number alone does not guarantee compatibility, so fire a test tile before committing a project.
More of this color Also available in a 3mm sheet · with a Luminescent coating · with a Luminescent coating .
Helpful downloads Wissmach COE 96 Kiln Glass Catalog
Technical data courtesy of the Paul Wissmach Glass Co.
Description updated: August 13, 2026
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