Boring can be performed by
Boring
machines only
Boring
machines and lathe
A
machine only by single point high speed carbide tools
Boring
machine, lathe and milling machine.
Boring
machine, lathe and milling machine.
Boring
is a hole enlarging process, which can be done by lathe, milling machine and
boring machine itself but the accuracy will be poor in case of milling because
of the intermittent cutting.
Hence,
the correct option is (D).
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