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
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.
Click on an image below
to see a larger version.