Quick Tip: A Riot of Effects


Simple Layup + Reactions = A Riot of Effects

What’s Going On In This Glass?

Our piece may look complex, but the colorful effects resulted from just allowing and preventing two types of reactions: sulfur + copper and sulfur + silver.

The Layup was Simple

A base of Tekta Clear sheet (001100-0380) topped with French Vanilla sheet (000137-0030); strips of Silver Foil (007217) placed on the French Vanilla sheet; and Light Aquamarine Blue medium frit (001408-0002) layered over the bottom 2/3 of the silver strips, spilling onto the French Vanilla sheet. We fired to a full fuse.


We’ve had success firing this layup with an initial heat range of 200-400°F in the first segment of a full fuse. If using larger pieces of silver, slow this rate to 100 degrees per hour to prevent thermal shock.

What Happened
  • Copper-bearing Aquamarine frit reacted with sulfurbearing French Vanilla sheet.
  • Silver foil reacted with sulfur-bearing French Vanilla sheet. Uncapped and unrestrained, the reaction spread out (fumed) toward the edge of the piece.
  • Copper-bearing Aquamarine frit did not react with silver foil. Instead, it capped the foil, confining the reaction between silver and French Vanilla to the border.
Download or print the full article.