Sub-group/No.	Speed	Feed/rev.	Shaft diameter (mm)			Ave. dia.
Sub-group/No.	(rpm)	(mm)	Attempt 1	Attempt 2	Attempt 3	(mm)
1	300	0.25	39.960	39.965	39.960	39.962
2	400	0.30	39.965	39.960	39.965	39.963
3	500	0.50	39.965	39.965	39.965	39.965
4	300	0.25	39.955	39.955	39.955	39.955
5	400	0.30	39.960	39.960	39.960	39.960
6	500	0.50	39.965	39.965	39.955	39.962
7	300	0.25	39.955	39.955	39.955	39.955
8	400	0.30	39.965	39.965	39.965	39.965
9	500	0.50	39.960	39.955	39.960	39.958
10	300	0.25	39.960	39.965	39.960	39.962
11	400	0.30	39.955	39.965	39.960	39.960
12	500	0.50	39.960	39.965	39.955	39.960
13	300	0.25	39.965	39.955	39.955	39.958
14	400	0.30	39.960	39.960	39.960	39.960
15	500	0.50	39.960	39.960	39.965	39.962
16	300	0.25	39.960	39.965	39.960	39.962
17	400	0.30	39.965	39.960	39.955	39.960
18	500	0.50	39.960	39.950	39.955	39.955
19	300	0.25	39.955	39.960	39.960	39.958
20	400	0.30	39.960	39.960	39.965	39.962
21	500	0.50	39.960	39.965	39.965	39.963
22	300	0.25	39.955	39.955	39.960	39.957
23	400	0.30	39.965	39.955	39.965	39.962
24	500	0.50	39.960	39.960	39.955	39.958
25	300	0.25	39.960	39.965	39.965	39.963
26	400	0.30	39.955	39.960	39.965	39.960
27	500	0.50	39.960	39.965	39.960	39.962
28	300	0.25	39.965	39.955	39.965	39.962
29	400	0.30	39.965	39.960	39.955	39.960
30	500	0.50	39.960	39.965	39.965	39.963