![A-300x300](https://nys-art.com/wp-content/uploads/2021/03/A-300x300.jpg)
CREATION OF THE ORIGINAL MODEL
![A-01-300x300](https://nys-art.com/wp-content/uploads/2021/03/A-01-300x300.jpg)
Realization in clay,
plaster,
wax, …
MODEL MOULDING
- Making a mould in elastomer.
- Setting up = mould in 2 parts to bring out the original.
- Elastomeric layer.
- Plaster or resin shell with a casting cone.
- Demoulding to reveal the original piece of art.
![B-01](https://nys-art.com/wp-content/uploads/2021/03/B-01.jpg)
![B-300x300](https://nys-art.com/wp-content/uploads/2021/03/B-300x300.jpg)
![C-300x300](https://nys-art.com/wp-content/uploads/2021/03/C-300x300.jpg)
WAX CASTING (REPRODUCTION OF THE ORIGINAL ARTWORK IN WAX).
![C-01-300x300](https://nys-art.com/wp-content/uploads/2021/03/C-01-300x300.jpg)
- The mould is filled with liquid wax.
- The thickness of the wax (=thickness of the bronze) depends on the time left before emptying the excess wax.
- The wax is allowed to cool on the inside of the mould.
WAX REWORK
- Recovery of the wax model (demoulding).
- Touching up the wax.
- Mounting of the future wax feeders and vents, thus allowing the future casting of the bronze.
![D-300x300](https://nys-art.com/wp-content/uploads/2021/03/D-300x300.jpg)
![01](https://nys-art.com/wp-content/uploads/2021/04/01.jpg)
![G](https://nys-art.com/wp-content/uploads/2021/03/G.jpg)
![E](https://nys-art.com/wp-content/uploads/2021/03/E.jpg)
![F](https://nys-art.com/wp-content/uploads/2021/03/F.jpg)
![C-300x300](https://nys-art.com/wp-content/uploads/2021/03/C-300x300.jpg)
COATING
![H](https://nys-art.com/wp-content/uploads/2021/03/H.jpg)
- The wax model is coated with refractory plaster.
- If the wax is hollow, a core of refractory plaster is poured inside.
- The core is held in place by nails and holes in the outer casing.
MELTING OF THE WAX
- The entire model is heated in a furnace for 24 hours (depending on the size of the artwork).
- The wax melts at 250°C.
- Temperature is increased in phases to 700°C to ensure that all the wax is melted.
- The void left by the wax will then be replaced by the bronze.
![I](https://nys-art.com/wp-content/uploads/2021/03/I.jpg)
![J](https://nys-art.com/wp-content/uploads/2021/03/J.jpg)
BRONZE CASTING – 1200°C
![rsz_05.jpg](https://nys-art.com/wp-content/uploads/2021/04/rsz_05.jpg)
COOLING
DEMOILING
Phase that lasts approximately 24 hours (depending on the size of the artwork).
![K-300x300.jpg](https://nys-art.com/wp-content/uploads/2021/03/K-300x300.jpg)
Destruction of the plaster coating
to extract the bronze sculpture.
CISELURE
- Cutting of the power supplies.
- Trimming.
- Sanding.
- Welding.
- Surfacing.
![L](https://nys-art.com/wp-content/uploads/2021/03/L.jpg)
![02](https://nys-art.com/wp-content/uploads/2021/04/02.jpg)
![03](https://nys-art.com/wp-content/uploads/2021/04/03.jpg)
PATINA (COLOUR OBTAINED BY THE OXIDATION OF BRONZE).
![M](https://nys-art.com/wp-content/uploads/2021/03/M.jpg)
- Heating the piece and depositing copper nitrate (for green), iron nitrate (for brown), etc…
- Blocking and protection of the patina with wax, cooling and polishing.
As a general rule in bronze art, the editions are 8 copies + 4 artists’ proofs.
When the artist wishes to remake a sculpture, he starts again from the mould, makes another wax, …
This is why it is called a lost wax bronze technique!