Vacuum casting

Create prototypes with production like quality. Using silicone molds you can generate high quality pieces to obtain a series of final pieces in limited quantities.

What is vacuum casting?

Vacuum casting consists of the manufacturing of a master cast previously generated by stereolithography, laser sintering, or even CNC machining with a high-quality surface finish. From this model, a silicone mold is produced by pouring the final material over the master model. Partial vacuum is then used to remove presence of air bubbles.

Once the silicone mold has been created, identical copies of the original model can be created using a versatile material such as polyurethane (PU) that allows simulating the rigidity and appearance of various production materials.

Main applications for vacuum casting:

prototipos estéticos

Aesthetic prototypes

Get prototypes with a quality comparable to those of final production and with a wide range of finishing options.

Functional prototypes

Fabricación de prototipos funcionales previos al lanzamiento de los productos finales.

Low volume series

Fabrication of low volume parts and assemblies for pre-production or final production.

Advantages and Limitations

Main advantages

  • Versatility for the design of large complex parts
  • Up to 25 pieces with the same mold
  • Quality comparable to plastic injection
  • Possibility of multi-material components and overmolding

Main limitations

  • Not competitive for high volumes
  • Need to create molds
  • Limited precision of parts

Available Materials

Vacuum casting mainly uses polyurethane which can be formulated with properties that simulate those of other final materials.

PP-like

Polyurethane with characteristics similar to those of Polypropylene (PP) with some flexibility.

ABS-like

Polyurethane with characteristics similar to those of ABS.

Rubber-like

Polyurethane with rubber-like properties with different degrees of hardness.

Finishing options

Different finishing options for your parts:

acabado natural

Natural

As they come out of the 3D printer, the parts are cleaned and polished.

Colada translucido

Translucent

You can get translucent pieces to a different degree or totally transparent.

pintado spray

Spray paint

Polished and spray painted parts to match a specified color. Primer can be applied to improve adhesion.

acabado suavizado

Smoothing

Printed parts are placed in a sealed container filled with acetone or other solution. The solution interacts with the material and melts the plastic in a slow and controlled way to create a super smooth model.

chapado metal

Metal plating

It consists of placing a thin layer of metal on the surface of the piece. The most commonly used metals for plating are gold, silver and nickel, but there are other plating options such as chrome plating and galvanizing.

acabado tacto suave

Soft feel

A soft touch paint is applied to the outside of the part to achieve a rubbery and smooth touch.

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