COE96 Wissmach Glass

The COE96 Wissmach selection at Art Glass Supplies is sheet glass from the Wissmach Glass Company tested to coefficient of expansion 96, made for fusing, slumping, and warm work where every layer must move together through the kiln. The range covers transparents, opalescents, multi-color blends, reactive combinations, and Luminescent finishes in standard sheet thickness, plus a thinner option for capping and detail layers. Use it on its own or interleave with other 96 COE compatible sheets and accessory glass.

What COE96 Wissmach sheet glass is

COE96 refers to the coefficient of expansion, the rate the glass expands and contracts through firing. Sheets in the same tested-compatible COE family are intended to fire together with reduced compatibility risk when the firing schedule is appropriate, so staying within one system matters. Wissmach's 96 line is a fusing-compatible art glass that cuts and scores like familiar stained glass sheet and fires on standard COE96 schedules.

Colors and styles in this category

Selection runs from clear and crystal transparents through saturated colors like Blue Lake, Cinnamon, Classic Violet, Cornflower Blue, Dark Red, Deep Sky Blue, Emerald Coast, Garden Green, and Bronze, into opalescents such as Azure, Blush, and Dark Red Opalescent. Multi-color sheets pair crystal with a second color or with Oyster Pearl for streaky, wispy, and pearled effects, and reactive blends like Crystal with Reactive Blue can create color interactions when paired with compatible reactive glasses.

Luminescent and standard finishes

Many of the same Wissmach colors are offered in Luminescent versions, which carry an iridescent surface that catches light across the sheet and reads differently depending on angle. The plain (non-Luminescent) sheets remain the workhorse for layered fuses and stained glass panels where a clean face is preferred. Both fire on the same COE96 schedules and can be combined in one piece.

Thicknesses and how to choose

Most sheets are 3mm, the standard thickness for fused work and stained glass panels, while a thinner 2mm clear is useful for capping, fine detail, and keeping stack height down on multi-layer projects. Pair these sheets with COE96 frit, stringer, and accessory glass from the broader COE96 Sheet Glass family so your palette stays compatible from base layer to cap.

Uses in fusing and stained glass

Wissmach 96 sheet works for fused jewelry, coasters and tiles, plates and bowls slumped over molds, suncatchers, kiln-formed panels, and copper foil or lead came stained glass when you want a fusing-compatible material. Test fire a small sample any time you mix a new color or a reactive sheet into an existing palette to confirm color shift and compatibility before committing to a larger piece.