Table 6.

Orthogonal table of the printing parameters.

NO.	Raster Angle (°)	Layer Thickness (mm)	Infill Degree (%)	Ultimate Tensile Strength (MPa)
1	0/90	1.6	80	5.08 ± 0.45
2	0/90	1.8	70	5.57 ± 0.61
3	0/90	2.0	60	4.21 ± 0.29
4	45/−45	1.6	70	5.66 ± 0.51
5	45/−45	1.8	60	3.35 ± 0.28
6	45/−45	2.0	80	6.73 ± 0.87
7	60/−30	1.6	60	5.17 ± 0.49
8	60/−30	1.8	80	5.13 ± 0.44
9	60/−30	2.0	70	5.12 ± 0.38
$\overline{y}$j1	4.95	5.30	5.65	${\displaystyle \sum _{i=1}^9{y}_i}=46.02$
$\overline{y}$j2	5.24	4.68	5.45
$\overline{y}$j3	5.14	5.35	4.24
RJ	0.29	0.67	1.41
Primary and secondary factor	Infill degree > Layer thickness > Orientation
Optimal combination	Orientation (45°/−45°)—Layer thickness (2 mm)—Infill degree (80%)