“…Polymers for 3D printing are extensively used in the form of photosensitive resin, thermoplastic filaments and powders, and viscous polymer inks [ 9 , 11 ]. The techniques for AM of polymers can be divided into vat photopolymerization [ 12 , 13 , 14 ], material extrusion [ 15 , 16 , 17 ], powder bed fusion [ 18 , 19 , 20 , 21 ], material jetting [ 22 , 23 , 24 ], binder jetting [ 25 , 26 ], and sheet lamination [ 27 , 28 , 29 ]. The working principles of individual AM techniques for polymers differ on the machine technology and material selection.…”