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Which method mentioned below is used for drilling of large size holes?(a) Direct drilling(b) Drill and ream(c) Trepanning(d) All of the mentionedThe question was posed to me in unit test.This intriguing question originated from LBM-Applications in section Thermal Processes of Advanced Machining

Answer»

Correct CHOICE is (C) Trepanning

Explanation: Trepanning method of laser drilling process is used for drilling large holes either by ROTATING or MOVING the PART.



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