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001015 Alchemy Clear, Silver to Gold

Overview

Reactive Potential

Non-reactive with Copper, Sulfur / Selenium or Lead bearing glasses. However, it may react with Silver.

Forms of Glass

Sheet Glass

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Detailed Information

About 001015 Sheet Glass
Cold Characteristics

Unfired sheet has a faint blue tint.

Working Notes

001015 Alchemy Clear, Silver to Gold is designed to react with silver foil when fired together to turn the silver a golden color. Expect variation in fired results across production runs. Part of a series that includes Alchemy Clear, Silver to Bronze (001016).

On the sample tile above, the left side of the reaction illustrates silver foil after being fired uncapped on top of 1015. The right side of the reaction illustrates silver foil after being fired with 1015 as the cap. (Faint blue color may be evident in any fired work containing 1015.)
Top: Pre-Fire layup of lower samples. Clear base, upper silver square, Alchemy Cap (001015 left, 001016 right), lower silver square.
Bottom: Full Fuse samples, 001015 left, 001016 right.

Expect variations in effects to result from different sources and thicknesses of silver, glass production runs, and heatwork (including firing times, temperatures, and number of times fired). We have also observed inconsistency in golden reaction color within the silver when scaled up in larger projects.

Expect variation in fired results across production runs. Same layup as samples above.
Top Row: 001015, Alchemy Clear, Silver to Gold, multiple production dates.
Bottom Row: 001016, Alchemy Clear, Silver to Bronze, multiple production dates.
Top row, Left to Right: 001015 fired in one full fuse firing, 001015 fired in multiple full fuse firings.
Bottom row, Left to Right: 001016 fired in one full fuse firing, 001016 fired in multiple full fuse firings.

For color development, we recommend a 1-hour soak at 1225°F in the pre-rapid heat section of a firing cycle.

Note: When firing silver foil in the kiln, be aware that the silver reaction can travel across the glass surface and onto the kiln shelf, potentially affecting silver-sensitive glasses in one or more subsequent firings. This can happen even when new shelf release (paper or primer) is applied to the kiln shelf. When fired between layers, silver is generally more contained and less likely to affect the firing surface.

001015-0031 Alchemy Clear, Silver to Gold, with rainbow iridescent coating Because iridescent coating acts as a barrier, there will be minimal to no reaction when using silver directly against the coated side of the glass. That said, the silver might still make contact with the glass through thinner sections of the iridescent coating. This may result in pale gold effects caused by 1015’s silver reactivity, detailed above. Results vary widely, both in terms of the effect’s strength and color.

Bowls demonstrating silver to gold and silver to bronze effect with 001015 and 001016 sheet glass

The above bowls (2″ x 2″) demonstrate the use of 001015, Silver-to-Gold and 001016, Silver-to-Bronze as demonstrated in the video Alchemy Clear Drop-Out Bowls.