Cast iron
Copper and brass
Close grained iron
White cast iron
Brass
Cast Iron
Lead
Bronze
Regulate cutting action and lubricate surface
Smooth effective operation
Improves dimensional accuracy
Improves cutting ability
As per checklist
As per the knowledge of trainee
As per the knowledge of instructor
As per the knowledge of manager
Maintain machine in good working order
Increase the cost of inspection
Reduce the vibration of machine
To keep the maintenance records