“…Some studied different materials [1,11,14] and feeding mechanisms by the consideration of melting and extrusion system [15], surface finish and dimensional accuracy [16], material swelling [17], in-process cooling [18,19], thermal analysis of layers [2], and melt stability [20]. Also, some other examined the effect of printing parameters such as nozzle temperature, bed temperature, nozzle diameter, nozzle geometry, layer height, extrusion width, sample's orientation, raster angle, filling percentage, filling pattern, air gap, and printing speed [3,21].…”