Additive manufacturing (AM), commonly referred to as 3-D printing, is becoming more prevalent in industry. AM is a set of processes for making products by selectively joining small amounts of material, using a computer-aided design file. [1,2] The advantages for industry include: shortened production cycles, reduced tooling costs, reduced waste material, easier product customization, novel design options, and new possibilities in distribution and fulfilment. [2–6] The automotive, aerospace, medical device, and electronics manufacturing industries are already using AM, and biomedical applications are expected to grow. Additionally, AM is found in construction, offices, and libraries. It is also important to note
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