Glass fusing

Fusing joins pieces of glass by heating them until they bond. In glass art, the term commonly refers to joining glass in a kiln. It is used for images and decorative objects within the broader field of glass. Fusing describes a process, not a particular manufacturer.

Fusing and other kiln processes

A light fuse, often called tack fusing, can leave the pieces in distinct relief. In a full fuse they flow together more thoroughly. Slumping instead bends or lowers heated glass into or over a mould. A platter can therefore be fused and then shaped in a later operation.

The glass components must be compatible. Manufacturer Bullseye stresses that a matching coefficient of expansion alone does not establish compatibility between different glasses. This technical figure should not be treated as a simple guarantee for an unidentified object.

What should be recorded?

Describe the dimensions, thickness, surface, visible layers and any signature. Record chips, cracks and repairs in a condition report. Appearance may provide clues to the process, but does not establish who made the work.

Next steps

Explore available objects in glass and crystal. For an enquiry about valuation, provide photographs of the front, back, edges and any markings.