Selective laser sintering is a rapid prototyping method in which a plastic model is constructed from a thermoplastic powder (polyamide, polystyrene, polycarbonate) by means of a sintering method. The prototype is generated directly from the 3D CAD data (in STL format). The powder particles are locally melted and solidified by a horizontal CO2 laser in layer thicknesses of 0.1-0.25 mm.

Selective laser sintering is suitable for the layered construction of very complex geometries with undercuts or integrated functions. Due to the relatively wide selection of materials, the requirement of thermal resistance and mechanical strength can generally be easily satisfied. Up to 90% of the material properties of the series part can be achieved. Geometry and function models in the SLS method are particularly useful for informative tests at the beginning of product development since they save additional steps. Comparatively disadvantageous are the difficulty of creating internal cavities and inferior surface quality in comparison to stereolithography or milling.

G.W.P. AG manufactures high-quality plastic prototypes using the SLS process. Whether test models, prototypes for function testing, individual parts or pilot lots, selective laser sintering is the suitable rapid prototyping method when speed and series-like properties are required.

Advantages of selective laser sintering:

• Plastic prototypes for high material requirements
• High strength
• Complex geometries with integrated functions are possible (movable hinges, snap connections...)
• Good dimensional accuracy, but rough surface
• Plastic can be colored with RAL colors
• An absolute seal can be created by means of subsequent infiltration
• Biocompatible and food-safe plastics can be used
• Suitable for individual parts and small batches of 1-200 units
• Construction area: 800 x 550 x 500mm

Take advantage of G.W.P.'s experience in the production of high-quality thermoplastic prototypes – You will save costs and time!