Fusible clay can be used like any other clay. It is plastic and can be manipulated by a number of traditional clay forming techniques. As long as the clay is not fired it can be re-wetted, mixed, and used over.
When the clay dries it will shrink and crack like dry mudflats. This is an exciting aspect of clay fused with glass because you can see through these fissures and know that something uncharacteristic of glass is happening. When blowing the glass, these fissures open up and constrict depending on the manipulation of the glass.
Fused sheets of glass can be scored and cut by hand or with a waterjet machine which can cut the glass into most any desired shape. Cut shapes and clay elements can be re-fused into new compositions. New layers of glass, or clay, can be added and fused to provide shape color and texture. Clay can be fused with glass in sheets and then blown using the roll-up process. Glass can be gathered onto a pre-fired clay shape.