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Proceedings of CAD'16, 2016, 127-130
Geometrical Fidelity of Consumer Grade 3D Printers

Felix Baumann, Jochen Wellekötter, Dieter Roller, Christian Bonten, University of Stuttgart

Abstract. Fused Deposition Modeling (FDM, reg. Trademark by Stratasys Inc.) or Fused Filament Fabrication (FFF) is a layer oriented Additive Manufacturing (AM) technique where semi-molten thermoplastics like Acrylonitrile Butadiene Styrene (ABS) are extruded in strands through a heated nozzle of a printhead that is mobile in two directions (X-Y plane). FFF printers can be classified by precision or cost where professional 3D printers are expected to be more precise and faster than low cost or consumer grade 3D printers. This research is to evaluate the geometric fidelity of 3D printed parts on consumer grade 3D printers in regard of the printing orientation. With this research we present a low cost and unobtrusive method to perform geometrical analysis for flat printed additively manufactured objects. By providing a software component that is able to extract geometrical information from existing models (as STL or STEP files) and matching them to digitally acquired images from printed objects we are able to ascertain the geometric fidelity of 3D printed objects under the influence of varying filling patterns and object orientation.

Keywords. Rapid Prototyping, FFF, Fused Filament Fabrication, Dimensional Accuracy, Consumer Grade 3D Printer

DOI: 10.14733/cadconfP.2016.127-130