Casting Process

The creation of a bronze sculpture is highly skilled work involving a series of artistic, chemical and metallurgical processes. Below is a brief summary of the main stages of the casting process.

PREPARATION FOR RUBBER APPLICATION

A clay boarder is set out and dovetails are re cut in preparation for the application of rubber.

 

SILICONE RUBBER MASTER MOULD

Rubber is applied to the piece, and seams are re built to allow for release of the sculpture.

 

CREATE PLASTER CASTING

Plaster and glass fibre reinforcement are mixed and applied over the rubber in layers.

 

MAKE WAX MODEL

The empty rubber mould is reassembled and strapped into the wax jig. Molten wax is poured inside.

 

CREATE CERAMIC SHELL

A ceramic shell is created around the wax figure to imprint the wax portrait and withstand the heat of the molten bronze.

 

CHASING THE CASTING

Te detail is then “cold worked” back into these freshly welded areas using grinders, engravers, hammers and chisels.

 

PATINATION & FINISHING

The sculpture is sand blasted, heated with a blow torch, and oxidizing solution applied, and the desired colour applied to create the finished piece.

 

Want to know more about the process? Download the brochure.