Abstract
A digital fabrication technology, which fabricates a part using the 3D CAD model by layer over layer material deposition, is termed as additive manufacturing (AM) or 3D printing. There are various additive manufacturing techniques but the Fused Filament Fabrication (FFF) technique is more popular among them. The popularity of FFF is because of low cost and easy construction of a 3D printer and the availability of various feed materials. In this paper, various applications and materials used in additive manufacturing are discussed. The complete process of 3D printing is discussed along with a detailed discussion of FFF based 3D printing. At the end of the paper, an overview of the design of an FFF based 3D printer is provided.
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