Two test pieces. One a 10 cm square, the other a 12 cm square. For both, arranged 3 mm colored pieces over a 3 mm clear base, filled in gaps with medium clear frit. Tacked down the larger pieces with craft glue. COE 90.
Cleaned up frit that had fallen off and stuck to the edges with a Dremel.
Slump smaller square over a 10 cm bowl. Drape larger square over a 10 cm bowl upside down suspended on two small posts. Put kiln paper over the bowls to prevent sticking.