Flexi-Glass Medium (FG Medium) is a liquid bonding agent that is flexible when dry. This is one of the key components of the Flexi-Glass system. FG Medium mixes with frits to make a flexible fusible FG Film that can be cut with scissors, with enamels to make FG Threads or FG Mica to make FG Luster sheets. FG Medium now comes in 16oz bottles.