DefinePK

Abstract

This paper investigates the effectiveness and accuracy of open source 3D printer of Mendel Max and Kossel Mini that used the additive manufacturing technique of Fused Filament Fabrication (FFF). A benchmark of the 3D printer test model was designed based on critical features of AM process i.e. hemispheres, cube, cylinders and slots. The benchmark was produced by both machines using variation FFF parameters of layer height and infill density. In addition, the material of FFF was varied between PLA and ABS for each test. The dimensional accuracy of the part features were measured by the nominal dimension of the part using Profile Projector DS600. In addition, TR200roughness tester was used to measure the surface roughness. The result shows that for dimensional accuracy results, Mendel Max machine has a lower deviation result compared to Kossel machine. Furthermore, PLA filament gives better result compare to ABS filament in term of surface quality finishing for both machine. The result shows that for both 3D printer machines, the quality and accuracy of the part features are better when the layer thickness is 0.178 and20% infill density.