Basic Drilling

Drilling is the most commonly used form of machining. A single automobile is said to have more than 5,000 forms of holes. Even if all of these are not drilled holes a very high percentage are. It is estimated that around 40% are actually drilled.


Drilling may be the most common form of machining, but it is also one of most difficult. Since the machining is done in a hole, you don’t know what is actually happening at the cutting edge.


Drilling can be done by almost any machining tool that is capable of cutting, including drilling lathes, milling machines and drill presses. The drilling process can be divided broadly into the five methods listed below.


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Machining of holes

Drilling - the most common form of machining