Answer is:
Diamond
Explanation:
Diamond is the hardest cutting tool material.
Answer is:
back rake and side rake
Explanation:
There are two rake angles of a lath cutting tool. These are back rake and side rake.
Answer is:
any one of positive, negative or zero
Explanation:
Rake angle of a lathe tool can be positive, negative or zero.
Answer is:
Positive rake angle
Explanation:
Positive rake angle a lathe cutting tool makes it sharp and pointed.
Answer is:
Reduces friction
Explanation:
Since negative rake angle of a lathe cutting tool increases area of contact, in increases the friction between the work piece and the cutting tool.
