Table A1.

Complete data set for miniature tube type A *.

X1	X2	X3	X4	X5	Average Surface Roughness ${\mathit{R}}_{\mathbf{a}}$ (mm)	Back Wall Dross responses ${\mathit{D}}_{\mathbf{b}\mathbf{w}}$ (%)
−1	−1	−1	−1	−1	0.91	3.10
1	−1	−1	−1	−1	0.97	2.26
−1	1	−1	−1	−1	0.97	3.25
1	1	−1	−1	−1	0.99	3.73
−1	−1	1	−1	−1	0.91	3.84
1	−1	1	−1	−1	0.93	2.28
−1	1	1	−1	−1	1.05	4.72
1	1	1	−1	−1	1.07	3.55
−1	−1	−1	1	−1	0.88	5.53
1	−1	−1	1	−1	1.04	4.34
−1	1	−1	1	−1	0.98	4.92
1	1	−1	1	−1	1.15	5.60
−1	−1	1	1	−1	1.13	5.43
1	−1	1	1	−1	1.14	4.49
−1	1	1	1	−1	0.95	7.33
1	1	1	1	−1	1.36	5.85
−1	−1	−1	−1	1	1.07	3.63
1	−1	−1	−1	1	0.93	3.35
−1	1	−1	−1	1	1.06	4.55
1	1	−1	−1	1	1.24	4.73
−1	−1	1	−1	1	1.04	3.88
1	−1	1	−1	1	0.99	4.65
−1	1	1	−1	1	1.07	4.07
1	1	1	−1	1	1.28	6.69
−1	−1	−1	1	1	1.09	5.98
1	−1	−1	1	1	1.06	4.74
−1	1	−1	1	1	1.00	6.53
1	1	−1	1	1	1.14	7.24
−1	−1	1	1	1	1.19	6.97
1	−1	1	1	1	1.21	6.20
−1	1	1	1	1	1.09	6.07
1	1	1	1	1	1.37	6.85
0	0	0	0	0	1.35	5.82
0	0	0	0	0	1.32	5.53
0	0	0	0	0	1.42	6.65
0	0	0	0	0	1.41	5.59

* Miniature tube type A: X₁: Pulse Frequency f (Hz); X₂: Pulse Width τ (ms); X₃: Peak Power P_peak (W); X₄: Cutting Speed v (mm/min); X₅: Pressure P (bar).