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Molten bronze being poured from a crucible

Lost-wax
casting

Lost-wax casting is one of the most precise processes for bronze sculpture production. Its ability to reproduce forms, textures and detail has made it fundamental to both sculptural tradition and contemporary production.

Explore the stages

Initial model

The model may be made manually or digitally by the artist or the workshop, then printed in resin or filament. It is reviewed with the artist to ensure technical and formal viability.

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Initial model

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Plasticine model of spectacled bears.

Silicone mold

A silicone mold is made from the model, supported by a rigid mother mold that preserves the precision of the original form.

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Silicone mold

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Making a silicone mold.

Wax copies

Wax replicas reproduce the original piece. They define the wall thickness and prepare the sculpture’s internal structure.

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Wax copies

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Wax copy for the casting process.

Casting tree

The wax pieces are assembled into a shared channel structure used to pour the metal.

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Casting tree

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Casting tree assembled with wax pieces.

Ceramic shell and dewaxing

The assembly receives ceramic layers that harden into a heat-resistant mold. Heat then removes the wax, leaving a hollow cavity ready for casting.

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Ceramic shell and dewaxing

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Ceramic shell and dewaxing.

Bronze pour

Bronze is melted at high temperature and poured into the ceramic mold. Once solid, it reproduces the original sculpture in metal.

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Bronze pour

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Molten metal being poured during casting.

Cleaning and assembly

The pieces are removed from the molds, cleaned and, when necessary, welded together to reconstruct the final work.

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Cleaning and assembly

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Welding work during the assembly of El Pensador.Credits: Martha Castillo

Finishing and patinas

The final stages include polishing, surface adjustment and the application of patinas that define the piece’s finished appearance.

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Finishing and patinas

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Applying patinas to a sculptural piece.

1 / 8: Initial model

Every technical decision shapes the final result of the work.

Let’s discuss your project

You can also email us at [email protected].