How do you add a magnetic head to the screwdriver head?
A screwdriver is a rotating screws to force the tools in place to twist, usually with a thin wedge head, the screw head can be inserted into the slot or recess -- Beijing Tianjin Hebei Jinyu and Shaanxi dialect called "screwdriver", Anhui, and Hubei, known as the "driver", the Midwest known as "the knife", the Yangtze River Delta region known as the "screwdriver". The main word (minus) and cross (plus two). There are also commonly used six corner screwdriver, including six corners and six corners outside two.
You can put a magnetic larger magnet in the screwdriver head for a period of time, it will be a bit larger magnetic.The magnetization is accelerated by magnetization of the N-S pole series in series;Degaussing is N-S-N parallel, so that the magnetic field is messy, eliminating magnetism.
