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. 2020 Jun 11;13(11):2663. doi: 10.3390/ma13112663

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Various types of printing methods (a) Stereo-lithography, (b) Powder Bed Fusion, (c) Binder Jetting, (d) Sheet Lamination, (e) Directed Energy Deposition, (f) Material Extrusion and (g) Material jetting [18,19,21].