This technique is very similar to the lost wax process of casting bronze and other precious metals.

The object is sculpted in wax. A one time plaster/silica mould is then hand built over the wax image. The wax is steamed out of the mould and placed into the kiln so the glass blanks can flow from a reservoir into the mould when the kiln temperature reaches the melting point of the glass.

The critical stage of the process occurs here as the molecules bond together and anneal the glass to prevent possible breakage in the future. Once cold, the object can be demoulded and cold worked to create the desired surface texture and finish.

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