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How to choose electric drill

Electric drill is one of the most commonly used tools in hand-held electric tools. Generally, electric drill is sold in hardware stores, ranging from professional stores to roadside hardware stores. However, if you want to buy a satisfactory electric drill, you still need to work hard. If you are not careful, you can buy inferior products. Specific purchase skills are as follows:

Check 3C mark
Electric drill products are compulsory certification products stipulated by CNCA. Therefore, when purchasing, you should first check whether there is 3C mark on the outer package or the nameplate of the tool, or go to CNCA's website to check whether the 3C certificate of the tool is currently valid, and the parameters on the nameplate and instruction book should be consistent with those on the 3C certificate.

Observe the appearance of the drill
The appearance of electric drill shall be uniform in color, the surface of plastic parts shall be free of obvious shadow and dent, the assembly dislocation between shell parts shall be ≤ 0.5mm, the coating of aluminum casting shall be smooth and beautiful without defect, and the surface of the whole machine shall be free of oil and stain. When holding by hand, the handle is good, the switch button is normal, and the length of cable should not be less than 2m.

Inspection of running electric drill
When the drill runs for one minute with power on, hold it by hand. The hand should not feel any abnormal vibration. Observe the commutation spark. The commutation spark should not exceed 3 / 2 level. Generally, when you look in from the air inlet of the tool, there should be no obvious arc light on the surface of the commutator. During operation, there should be no abnormal noise.

Brand selection of electric drill
Generally, when purchasing electric drills, you should choose big brands with good reputation and influence. Although the price is relatively high, these big brands have strong technical force, strict quality control and standardized after-sales service. In addition, users with strong purchasing power can also choose some international brand tools.

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