Table 1.

Anisotropy control factors and parameters.

Material Factors	3D Printing Process Control Parameters	Process Factors of 3D Printing or Additive Manufacturing
Polymer and monomer alternation [31,32] *	Raster angle [33,34] *	Heat treatment [35,36] **
Adding additives [27,37,38] ***	Layer Thickness [33] **	Using heat gun, light, and laser [30,39] *
Chemical treatment [40,41,42]	Build orientation [14,43] ***
	Feed rate [44] *
	Raster width [38,45]
	Bed and nozzle temperatures [35,45] ***
	Infill density [46,47] ***
	Air gap [38] *

Zero stars are the factor with the least influence on anisotropy, * low influence, ** medium influence and *** high influence.