Lost wax casting combines modern 3D printing technology with traditional metal casting to create gold, silver, bronze, brass, and copper parts.  

Advantages 

Our lost wax casting technology allows you to:

• Use 3D design files 
• Create final metal products with smooth surfaces and fine details 
• Choose between a wide range of finishes with the properties and looks of precious metals
   

Process description

There are 3 main steps in Lost wax casting:

1. Printing in Wax

We start the process by 3D printing your design file as a wax model. This step is a type of stereolithography process that uses a wax-like resin. Support structures are printed along with the model to ensure it doesn’t fall apart. These support structures are automatically generated and manually removed after the printing process

2. Mold making

Next, one or more wax sprues are attached to your model. The sprue attaches the model to a wax "tree," together with several other models. The tree is then placed in a flask and covered in a fine plaster. When the plaster solidifies, it forms the mold for casting the metal. The plaster mold is put in an oven and heated for several hours until the wax is completely burned out.  

3. Casting

Molten metal is poured into the plaster mold to fill the cavities left by the wax. Once the metal has cooled and solidified, the mold is broken, and the metal models are removed by hand. Finally, your model is filed and sanded to eliminate the sprues. The model is sanded, polished or sandblasted to create your desired finish.

Limitations of the technology

The casting process has certain physical limitations. It is not possible to create designs with undercuts, such as a “ball within a ball,” interlocking parts, or chains with this process.