Dimensional accuracy of models manufactured by selective laser sintering technology

Abstract

The paper presents the results of the metrological research of models manufactured by additive manufacturing technology, selective laser sintering (SLS). Three type of placement of the cylindrical geometrical features of the model on the building platform during manufacturing where chose. Samples were prepared with polyamide powder PA 3200 GF (with addition of glass fibres). Coordinate measuring machine (Prismo Navigator, Zeiss) were employed to obtain measurements. Research results proved that location of geometrical features on the build tray (printing direction) has a major impact on their dimension accuracy. Both, the most and the least favourable location variants were determined.