In drilling soft materials use cutting angle as low as 40 degrees but for extremely hard material up to _____________ degree is recommended.
A. 80
B. 65
C. 75
D. 70
Answer: A
In drilling soft materials use cutting angle as low as 40 degrees but for extremely hard material up to _____________ degree is recommended.
A. 80
B. 65
C. 75
D. 70
Answer: A
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.