3D-Print - Laser Sintering (SLS)

The Selective Laser Sintering process (SLS) describes the process of melting base material in powder form by means of a CO2 laser beam. The material is built up in layers onto the parts platform. Based on the data specifics of the 3D CAD model in STL format, the component is produced step by step in a powder bed.

Data guides the laser beam along the component outline. Layer by layer is processed this way in 0.1mm steps. On lowering the parts platform, a container supplies powder for another layer. The laser's energy is absorbed by the powder and leads to hardening the material locally.
  • Optimised testing of mechanical building components and trial series
  • very stabil material
  • optional varnishing of the finished product
  • easy manual processing of finished product for example by hand or milling

  • SLS-machine HQ (3D-Systems)

  • PA 650
  • PA 615 (contains glas fibre)

Layer thickness:
  • 0.1mm

3D-Print - Stereolithography (SLA)

In Stereolithography, a process of Rapid Prototyping or Rapid Manufacturing, a light hardening plastic material (Photopolymer) is hardened layer by layer with a laser. Fixation of the item on the building platform is typically achieved with a support structure.

Stereolithography allows precise production with fine structural details and smooth surfaces and is often used to achieve exact models for building first test parts. As STL part surfaces are of superior quality, models can be easily varnished and lacquered.


  • good model precision
  • high detail precision
  • good surface finish
  • easy to process

Layer thickness:
  • 0,05 - 0.1mm


  • Viper Si2 (3D-Systems)
  • Typ 250/50 (3D-Systems)
  • ProJet 6000 (3D-Systems)


  • Accura Extreme (grey)
  • Watershed XC 11122 (transparent)
  • VisiJet Tough (grey)