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How to buy a screwdriver

1. Professionalism

When purchasing, you must first determine the usefulness of purchasing an electric screwdriver. It is also used for professional use. The difference between home and professional use lies in power. Household electric screwdrivers are relatively rare and less used, and the input power is not so large. The professional power setting is large, so that professionals can reduce the workload, work for a long time, and will not feel so tired.

2, outer packaging

The outer packaging of the electric screwdriver should have a clear pattern, no damage, and the plastic box is strong. The buckle that opens the plastic box should be firm and durable.

3, the appearance of color

The appearance of the electric screwdriver should be uniform in color. There are no obvious shadows and dents on the surface of the plastic parts. There should be no scratches or bump marks. The assembly misalignment between the outer casing parts is ≤0.5mm. The aluminum castings are smooth and beautiful without defects. It should be free of oil and stains. When holding with your hand, the handle of the switch should be flat. The length of the cable should generally be no less than 2 meters.

4, the actual operation, viewing function

Hold the electric screwdriver with your hand, turn on the power, and frequently operate the switch to make the tool start frequently. Observe whether the on/off function of the electric screwdriver switch is reliable. At the same time, observe whether there are any abnormalities in the TV sets and fluorescent lamps on the spot. In order to confirm whether the electric screwdriver is equipped with a valid radio interference suppressor. And let the electric screwdriver run for one minute. When holding it by hand, the hand should not feel any abnormal vibration. Observe the reversing spark. The reversing spark should not exceed 3/2, generally from the electric screwdriver. Look inside the air inlet, there should be no obvious arc on the surface of the commutator. There should be no abnormal noise during operation.

5, brand, after-sales service

When purchasing a brand of electric screwdriver, you should take care to avoid buying high imitation goods. And look at the after-sales service, good products, after-sales service must be done very well, can guarantee consumer rights.

How to use a screwdriver

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