Journal of 2014/7/18

Drilling holes on 210 struts is done.
A: 90
B: 70
C: 30
D: 10
E: 10

Procedure of drilling two 9.6 mm holes on the strut
– apply two punches each end of the pipe
– drill two holes size of 3.0 mm or little bigger
– drill two holes size of 9.6 mm (Two or three drops of tapping fluid per hole)

Today I drilled 120 to 140 struts. I managed to drill 202 holes using one 9.6 mm bit. Two or three drops of tapping fluid by the syringe per hole worked out pretty well. I think I spent 70 to 80 cc of tapping fluid overall.

9.6 mm (3/4″) bit, 3.0 mm bit, and a syringe.

Ninety A struts were ready for big holes.

Applying punches on the pipe before drilling 3.0 mm hole.

2014/07/16

2014/07/17

2014/07/18