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Figure 1.1.

AM technology uses specialized designing software to produce CAD models with user-defined cross-sections and process constraints such as material restraints, source of energy, timings and layer thickness. The computed CAD design is then formatted into an STL (stereolithographic) file format. The STL file displays the peripherally closed external surface of the CAD geometry and performs the slice calculation using a slicing software, and then it is sent to the AM machine which is verified for its build orientation and position (Brandsmeier 2017). The construction of the material is automatically carried out in a layered fashion by the machine (3D printer) without any human supervision. The 3D printer needs manpower to only monitor the availability of raw materials and to check for any run-time errors. After completing the product, the interaction of the part with the machine is cut down by adjusting the machine temperature and then detached. In post-processing, the part is cleaned before use and treated mechanically for surface finish and the required texture (Scheck 2016).