Proper way to pull break drums

Most of the auto mechanics when they replace brake shoe pads, they used hammer in pulling out the break drums which cause deformation due to excess force of hammering. This is not the proper way to pull out break drums because there are holes on it for threaded bolts for proper pulling. I hate to see auto-mechanics performing the wrong way because instead of repairing the thing it can add damage to the vehicle. This is one of the things that most of the mechanics here practiced. This is because of lack of knowledge. The proper way of doing it is very simple. All you need to do is insert the three inches threaded bolt to its holes and gradually turn it clockwise until the break drum protrudes from its backing plate. There is no need to hammer it for it is so simple.