Colour Rapid Prototyping based on SLS process

Ian Gibson, Wai Ming Ling*

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

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Currently, the colour of parts made by the Selective Laser Sintering (SLS) process depends on the colour of the material used. SLS cannot make multiple coloured prototypes because only homogeneous powder (or powder composites) can be used during the process. In this paper, an ink-jet based mechanism is designed to print multiple colours onto the prototypes. The surface tension of conventional ink used in bubble jet printers is so high that it cannot penetrate into the SLS powders. To reduce the surface tension, ethanol is added to it. The ratio of ink to ethanol for necessary penetration is determined by experiments. This paper will go on to describe how the ink affects the structure of SLS materials. The effect of temperature on the penetration of ink into powders will also be discussed.
Original languageEnglish
Number of pages8
Publication statusPublished - 2000
Externally publishedYes
Event2000 International Solid Freeform Fabrication Symposium - University of Texas, Austin, United States
Duration: 7 Aug 20009 Aug 2000


Conference2000 International Solid Freeform Fabrication Symposium
Country/TerritoryUnited States


  • Rapid Prototyping (RP)
  • Selective Laser Sintering (SLS)
  • Colour RP
  • Multiple material RP


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