The quality and cost of bronze / aluminum casting for sculptures is greatly
affected by the casting technique a foundry employ.
Tany Foundry summarize the related knowledge according to its past experience
and create this chart to help artist to choose the optimal technique for
their sculptural projects.
| Lost wax casting | Sand casting | |
|---|---|---|
| Technical Workflow | Master pattern - Rubber Molding - Wax - ceramic shelling - Bronze casting - Chasing - Finishing - Patina | Master pattern - Sand molding - Bronze casting - Chasing - Finishing - Patina |
| Eligible casting material for sculptural project | - Bronze; - Brass; - Aluminum; - Stainless steel; | - Bronze; - Brass; - Aluminum; - Stainless steel; |
| Key Steps | Rubber Molding; Finishing | Sand Molding; Finishing |
| Ideal project scope | Small and medium sized works with textured details ( e.g: life size bust and figurative sculpture ) | Medium to monumental works with less details |
| Pros | - Lost wax casting can represent details of the sculpture very well, especially sculpture with lots of textures; - It costs less when you need to cast multiple editions from the same rubber mold; - There is no molding line like sand casting, which means better finishing quality of bronze | - The foundry can gain much bigger one single bronze casting piece from sand casting; - It can minimize the potential distortion happening during bronze casting, which means better integrity and nice shape. - It costs ess than lost wax casting on monumental sculpture and the turnaround time is shorter. |
| Cons | - It costs more than sand casting when it is monumental sculpture. - The casting may get distorted, especially for the sculpture with geometry shape like straight line and edges. - The turnaround time is longer than sand casting because a rubber mold and wax is required before casting. | - Sand casting is not very good to capture complciated textured details on sculpture like lost wax casting. - It requires very experienced artisans to perform sand molding - There may be trace of molding line left on the surface of sculpture. |
Below are a few cases made by Tany Foundry.
| Lost wax casting | Sand casting |
|---|---|
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I love the works and love the colors. Thx.
I wondering if there is any classes to teach casting process with wax,that we can participate
There are various methods in Bronze Statues casting followed by ancient Greeks such as lost wax casting or investment casting, sand casting and centrifugal casting. Lost wax method of Bronze casting requires the modeling of a form in clay, plaster or wax, which is later removed after the molten bronze has been poured. The lost-wax method was a common technique during the Renaissance era.
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