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Abstract
The continuous growth in layered manufacturing (aka, 3D printing) is revolutionizing the manufacturing industry. Fused filament fabrication 3D printing finds applications in various sectors such as automobile, aerospace, biomedical etc. However, the critical issues related to the technique imposes restrictions in its usage for a wider range of applications. Low part strength, mechanical anisotropy, delamination, porosity, low surface finish and limited choice of processable materials are some of the major constraints of the process.