Air is blown into the matrix to gently push the white glass through the mesh, creating a delicate pillowed form that is suspended inside the thick outer layer of clear glass. Sometimes the copper mesh basket folds and crinkles, adding specificity to each piece. Undulations in the exterior shape are a natural consequence of the fabrication process and accentuate the gentle white pillowing below. A low-voltage xenon or LED light source is introduced into the piece, casting a warm coppery hue.