The influence of large and small point angle.

The insert shape and point angle varies considerably from the smallest, at 35°, to the round insert.

Each shape has unique properties:

 - some provide the highest roughing strength.
 - others give the best profiling accessibility. 

Each shape also has unique limitations. 

    For example:
 - high edge accessibility during machining leads to a weaker cutting edge.

Large point angle

 - Stronger cutting edge.

 - Higher feed rates.

 - Increased cutting forces.

 - Increased vibration.

Small point angle

 - Weaker cutting edge.

 - Increased accessibility.

 - Decreased cutting forces

 - Decreased vibration