92) What is the finishing process carried out with abrasive sticks to correct the profile of internal cylindrical surfaces?

93) Which lapping material used for easy charging and rapid cutting?

94) Which lap material is inexpensive and can be expanded if worn out?

95) Which type of abrasive material is externally hard and used in lapping for heavy stock removal?

96) Which abrasive is used for lapping dies and gauges?