What is double touch method of making magnet?

It was noticed that magnetizing a steel bar could be made easier by the use of the double touch method.

Procedure:

1.Place a steel bar on a flat surface. e.g a table

2.Then two strong bar magnets are struck on the steel bar with their opposite poles striking the steel bar on either side AB.e.g the north pole of one magnet strikes side A and the south pole of another magnet strikes side B.

3.The magnets are moved to the centre and when they reach the centre,they are taken back to their original places in a magnetic field of way.

4.This stroke is repeated for several times until A and B gain a polarity.

5.You will notice that A will get the opposite polarity as B.i.e A will become the south pole while B will become the north pole.