Table 2. Parameters of electrical drilling, Part 1 (E+no = mean of 5 drilling procedures).

Experiment no.	Penetration rate [%]	Drilling time [s]	Deviation in angles		Force–mean [N]**			Force–max [N]**
			xz	yz	x	y	z	x	y	z
1–5 (E1)	60	58	1.7	1.4	2	0	60	7	6	84
6–10 (E2)	100	65	0.8	0.8	6	-5	68	12	9	86
11–15 (E3)	100	50	3.6	1,3	12	-5	98	21	15	132
16–20 (E4)	100	79	1.9	1.7	10	-9	77	19	18	123
max	100	163	5	4	18	5	116	25	22	142
mean	90	63	2	1.3	7	-5	76	15	12	106
min	69	26	0	0	-3	-13	44	3	3	65