The Process of Casting Glass

What I enjoy most about glass casting is the variety of tasks and skills required to finish a piece. Drawing, sculpting, mathematics, a steady hand, and a complete thought process are needed to craft a piece.

The complete lost-wax casting process:

  • Create a wax model

  • Hand-build a kiln mould from plaster and silica around the wax model

  • Steam the wax from the kiln mould

  • Weigh and clean the lead crystal and pack into a terracotta pot

  • Place the mould in the kiln with the terracotta pot positioned above it

  • Set the kiln controller to desired firing schedule, a minimum of one week

  • Unpack the kiln and discard the terracotta pot

  • Remove the mould from the freshly cast glass

  • Cut the base off the glass with a diamond saw

  • Grind the base by hand-lapping with four varying grades of grit

  • Soak glass in polish dip for 8 hours

  • Polish flat areas, base or sides, with cerium oxide

  • Engrave signature and artwork code on the base

  • Photograph and catalogue the finished cast glass artwork

Pouring the molten wax
Shaping the fluid wax form
Joining the wax elements
Using the gas torch to shape the wax form
Checking the placement of wax elements
Making the refractory mould
Packing the kiln
Divesting the mould
Removing delicate areas of the mould
Polishing the cast glass artwork
Using a flexi-shaft tool for detail
Checking colour graduation
Light is the final collaborator in every sculpture. The cast glass artworks I create change with the day, inviting quiet reflection on connection, memory and place.

Photography by Adrian Malloch, Mark Hamilton, Grace Carson and Di Tocker