Rapid Prototyping (RP) can be described as a group of techniques used to quickly fabricate a scale model of a prototype, primarily Jewelry in our industry, by using three-dimensional computer aided design (CAD) data. Rapid Prototyping has also been referred to as solid free-form manufacturing, computer automated (or aided) manufacturing (CAM), and layered manufacturing.Essentially, rapid prototyping is a process of fabricating a wax model, layer by layer, through the use of two types of wax, one for the model itself, and one for support.

• To increase effective communication (through the use of a CAD image or scale model).
• To decrease development time (changes can be made in real time on the computer model in the design stage).
• To decrease costly mistakes.
• To minimize sustaining design or engineering changes (by examining the model in 3D, changes or enchancements can be made in the design stage).
• To extend product lifetime by adding necessary features and eliminating  redundant features early in the design.
• Increasing number of variants of products (templates are easily modified).
• Increasing product complexity.
• Decreasing product lifetime before obsolescence.
• Decreasing delivery time.

• The basic methodology for all current rapid prototyping techniques can be described as follows:

  • A CAD model is constructed, then converted to STL format. The resolution can be set to minimize stair stepping (layer line bordering).
  • The RP machine processes the .STL file by creating sliced layers of the model.
  • The first layer of the physical model is created. The model is then lowered by the thickness of the next layer, and the process is repeated until completion of the model.
  • The model and any supports are removed. The surface of the model is then finished and cleaned.

• Descon Corporation uses American made 3Design ProJet MJP 2500W equipment, which produce state of the art wax models (including investment casting waxes). The company also uses leading edge German Indutherm Casting equipment and Italian Orotig Laser Welding equipment.

Investment casting is a process in which high technology waxes are converted to fine jewelry pieces, in a variety of metals (Silver, Gold, Platinum & Palladium). With the use of high performance alloys, to add strength to the pieces, casting excellence is achieved.

In our industry, the process is generally used for small castings. As the investment casting process is generally the 3rd step in production of fine jewelry pieces, it compliments the CAD and 3D printing services, to create a turnkey product solution.