when a hole has been drilled and is tapered or bellmouthed, it should be corrected using...
when a hole has been drilled and is tapered or bellmouthed, it should be corrected using a
A. star drill.
B. Reamer
C. countersink
D. Tap
Homework Answers
Answer : countersink
When a hole has been drilled and is tapered or bellmouthed , it should be corrected using a countersink.
Explanation :
(A) Star drill is a specialised tool used to make holes in stone, concrete and masonry.
(B) Reamer is a type of rotating cutting tool used to enlarge the size of the previously drilled hole by a small amount.
(C) The head of the countersink has a conical shape. A countersink can be used to remove burr from tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.
(D) Taps are used to create screw threads which is called as threading.
So answer will be countersink.
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