Use A Special Shear To Cut Iron While It Is Hot ! - Video

A Little Wisdom Helps You Become Smarter !

The iron shears used in blacksmith shops mainly work on the principle of leverage !

Generally, they have two long handles and a blade part in the middle. When the blacksmith applies pressure on the long handles, according to the principle of leverage, the force applied multiplied by the length of the effort arm is equal to the resistance multiplied by the length of the resistance arm. The long handles are equivalent to the effort arm, and the blade encounters the resistance of the metal. The relatively long effort arm enables the blacksmith to exert a large shearing force at the blade with a relatively small force !

Moreover, when the metal is heated red-hot, its hardness decreases and its ductility increases. At this time, it is easier to use the iron shears to overcome the cohesive force of the metal and cut off the redundant parts !