Table 2 Arrangement of the levels to the factors.

From: 3D printing of continuous cotton thread reinforced poly (lactic acid)

Level (i)

CCT diameter (D, mm)

Nozzle temperature (T, °C)

Printing speed (V, mm/s)

1

0.6

200

6

2

0.8

210

8

3

1.0

220

10