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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: J Biomed Mater Res A. 2014 Dec;102(12):4326–4335. doi: 10.1002/jbm.a.35108

Table 1.

3D Printing Processing Conditions for Uniform PCL Scaffolds in a Full Factorial Design

Factor Print head speed
(F, mm/min)		 Fiber
spacing
(s, mm)		 Temperature
(T, °C)		 Operating
pressure
(P, psi)		 Delay time
between
layers
(D, sec)* 		Layer
height
(z, mm)
# Levels/Factor 2 3 1 7 1 1
Levels 300, 400 1.8, 2.0, 2.5 60 8, 10, 12, 14, 16, 18, 20 30 (0°), 120 (90°) 0.2 (0°), 0.6 (90°)
Total printing formulations tested 42
*

(0°): after a 0° layer is printed, (90°): after a 90° layer is printed