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Other non-conventional processes lay behind Laser beam machining in drilling process because of which factors below?

(a) High cost

(b) Long lead times

(c) Low machining speeds

(d) All of the mentioned

I got this question during an internship interview.

I'm obligated to ask this question of LBM-Applications topic in chapter Thermal Processes of Advanced Machining

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The correct choice is (d) All of the mentioned

To explain I would say: Other non-conventional processes need high costs for tools, long lead times, and low machining speeds when compared to LBM.

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