Question:-
Which one of the following sets of tools or tools and processes are normally employed for making large diameter holes?
Option (A)
Boring tool
Option (B)
BTA tool (Boring and trepanning association) and gun drill
Option(C)
Gun drill and boring tool
Option(D)
Boring toll and trepanning
Correct Option:
(D)
Question Solution:
Trepanning : The cutting tool produces hole by removing a disk shaped piece core usually from flat surface. A hole is produced without reducing all the material to form chips. It has single or multiple point tool.
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