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Drilling Drilling is easily the most common machining process. One estimate is that 75% of all metal-.cutting material removed comes from drilling operations  Drilling involves the creation of holes that are right circular cylinders. This is accomplished most typically by using a twist drill, something most readers will have seen before. The figure below illustrates a cross section of a hole being cut by a common twist drill The chips must exit through the flutes to the outside of the…

Drilling

Drilling

Drilling is easily the most common machining process. One estimate is that 75% of all metal-cutting material removed comes from drilling operations 
Drilling involves the creation of holes that are right circular cylinders. This is accomplished most typically by using a twist drill, something most readers will have seen before. The figure below illustrates a cross section of a hole being cut by a common twist drill

Drilling







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