Abstract
Fused Filament Fabrication (FFF) is one of the widely used Additive Manufacturing (AM) technique in which the molten feedstock material is extruded through the nozzle in a controlled fashion to fabricate the required components based on the virtual 3D models. Here the material is deposited in a layer-by-layer manner by following the G codes generated by the slicing software. Since the existing planar slicing technique faces the issue of stair-stepping artifacts, the present research tried to implement a modified slicing software which is capable of generating nonplanar layers and deposition strategy to improve the part quality. The modified slicing approach combines the planar and nonplanar layers to reduce the stair-stepping artifact. The developed slicing algorithm uses the geometric model of the nozzle and printhead to determine which region can be printed with nonplanar layers so that the resulting toolpaths will be collision free. For generating the toolpaths of nonplanar surfaces the open source slicing software, Slic3r is modified. The developed models with nonplanar layers are printed on a common FFF printer. Printing results are discussed including comparison of surface roughness as well as slicing and printing time with that of commonly used planar slicing techniques.
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Acknowledgements
Authors would like to thank Design Innovation Center-NIT Calicut, Calicut, Kerala, India for permitting to use the RAISE 3D© N Series 3D printer for fabricating the models. The facility for carrying out surface roughness measurement was provided by the DST-FIST Centre , Mechanical Engineering Department, NIT Calicut, (Number: SR/FST/ETI-388/2015) under FIST scheme of the Dept. of Science and Technology, Govt. of India.
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Anand Sankar, M., Deepak Lawrence, K., Mathew, J. (2023). Part Quality Improvement of Fused Filament Fabrication-Based Additive Manufacturing by Means of Slicing Software Modifications. In: Ramesh Babu, N., Kumar, S., Thyla, P.R., Sripriyan, K. (eds) Advances in Additive Manufacturing and Metal Joining. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-7612-4_21
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DOI: https://doi.org/10.1007/978-981-19-7612-4_21
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