Question

why diamond help in cutting and driling object
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Answer 1

Answer:

Because diamonds are very hard (ten on the Mohs scale), they are often used as an abrasive. ... Small particles of diamond are embedded in saw blades, drill bits, and grinding wheels. These tools are then used for cutting, drilling, or grinding hard materials

Answer 2

Answer:

Diamond is the hardest substance known to man.

It is used in drilling and cutting other metals,glass and also other diamonds