Now a days paperclips are very essential in our life. But, have you ever been thought the process of making this tiny useful metal clip ? 

Look into this following gif image, you can see the process of making paperclips is so simple. 

At first, a thin straight metal wire is pushed & then three spans of a heavy spinning metal wheel bend the clip and give it to the triangular shape.

image credit

Here is the full video of making paper clips

video courtesy :  Rudolf Grauer

reference :

http://todayilearned.co.uk/2014/10/05/this-is-how-paperclips-are-made/