Spiritiles are made by first laying powdered glass, or “frit,” onto a perfectly cut copper canvas, using a series of stencils for each layer of color, playing cards, and hand sifters to carve out the design. Once delicately aligned and layered, the glass and metal is carefully placed in the red-hot kiln, where the glass melts and fuses with the metal to create a smooth, durable, lustrous finish.