What method is used to tighten self-tapping screws?

Generally speaking, the tools used for self-tapping screws are gun drill, gas screwdriver, screwdriver, etc., but if you need to use it on a concrete wall, you need to use an electric hammer. Some cement walls are not suitable for the use of ordinary screws, especially if the wall is highly load-bearing, it is necessary to use expansion tubes and self-tapping screws to fix it.
It is better to use the self-tapping screw to understand its characteristics, and it is not suitable for direct use on the wall. It is not recommended to use free hand when the wall is penetrated. It is necessary to use a gun to drill holes in the wall. With the plastic expansion tube, the screw can be screwed in.
If it is general wood and material with low hardness, it can be directly punched in, without punching, because the screw itself is pointed, note that the straight line is marked at the position where the screw needs to be punched, so as not to be distorted, which affects the overall appearance degree.
What should I do if I need to take out the screws if they are crooked when tightening the screws? This is a problem for many people when they encounter this kind of problem. In fact, it can be solved with a simple stroke. Take a rubber band and put it Put it on the screw and use a screwdriver to press and turn, the self-tapping screw can be easily turned, so that it can be taken out.