The larger side rake angle produces chipping

The smaller rake angle produces excessive wear and deformation in tool

The side cutting edge angle (less than 15 degree) increases tool life

The increase in nose radius decreases tool life.

side cutting edge angle

tool nose radius

Rake angle

end cutting edge angle

carbide tools

heavy loads

harder materials

all of these

nose part, front relief face and side relief face of the cutting tool

face of the cutting tool at a short distance from the cutting edge only

cutting edge only

front face only

hardness of the work and tool material at the operating temperature

amount and distribution of hard constituents in the work material

degree of strain hardening in the chip

all of these