Characterization and Optimization of Mechanical Properties of ABS Parts Manufactured by the Fused Deposition Modelling Process

Table 1

Variable process parameters and their selected low and high levels.

Variable parameter	Unit	Low level (−1)	High level (+)
Layer thickness ()	in./mm	0.005′′/(0.127)	0.013′′/(0.3302)
Part orientation ()	Degree	0°	90°
Raster angle ()	Degree	0°	45°
Raster width ()	in./mm	0.008′′/(0.2032)	0.022′′/(0.5588)
Air gap ()	in./mm	−0.0001′′/(−0.00254)	0.022′′/(0.5588)