Vacuum casting belongs among the well-proven technologies of rapid prototyping.

Principle of vacuum casting

• At first, the so called master model is created by means of FDM technology of 3D printing. However, a part supplied by the customer can be used as the master model, too.
• The master model is embedded in silicone and after its removal the mould for casting is created which can be used multiple times.
• Casting is carried out in the vacuum chamber. Special two-component material on the basis of polyurethane resin is used.

Advantages of vacuum casting technology

• Possibility of casting parts with complicated shape, thin-wall parts or parts with negative bevel.
• Production of small series of prototype or final parts (dozens up to hundreds of pieces).
• Favourable costs of production in comparison with plastic injection moulding – not necessary to produce metal moulds.
• Very fast production - days.
• Accurate production comparable with accuracy of parts manufactured by plastic injection moulding.
• Wide possibilities of final surface treatment of parts.

Suitable applications of vacuum casting

• Production of plastic prototype parts.
• Parts for dimension and function tests.
• Design studies.
• Low-series production of spare parts for which the original equipment is not available.

Technical parameters

• Evektor has MK Vacuum Casting Chamber System II produced by MK Technology
• Maximum weight of manufactured part: 6 000 g