Electric drill products are suitable for drilling in steel, wood and plastic, is one of the more widely used handheld power tools. General hardware stores, from large professional stores to small roadside hardware stores, there are electric drills for sale, in order to buy the desired drill, you should generally pay attention to the following points.

First, the electric drill products are mandatory certification of the National Commission, so in the purchase, you should first check whether the tool has a 3C mark, check the general method, whether the 3C mark on the outer packaging of the tool or the tool's nameplate, if there is still doubt (due to the manufacturer of the drill did not pass the annual supervision and review, the National Commission will suspend or revoke its certificate), can be on the National Commission's website, check the tool's 3C certificate is currently valid.

Second, the general purchase of electric drills, should choose a better reputation, more influential large companies, because these large companies have strong technical force, strict quality control, after-sales service is also more standardized. Stronger purchasing power of the user, you can also buy some international brands of tools.

Third, according to the needs of the user, first distinguish between home use or professional use, as most of the electric drill is designed for professionals, so before buying, should first distinguish between professional and general home use tools. Usually the difference between professional and general home use tools in power, professional tools with more power to facilitate professionals to reduce the workload, general home use tools due to smaller projects, the workload is also relatively small, so the input power of the tool does not need to be very large.

Four, observe the outer packaging of the drill, the outer packaging of the tool should be clear pattern, no damage, plastic box is strong, open the plastic box buckle should be solid and durable.

Fifth, observe the appearance of the drill, the appearance of the tool should be uniform color, the surface of the plastic parts without obvious shadow silk and dents, there should be no scratches or bump marks, the assembly misalignment between the shell parts ≤ 0.5mm, aluminum casting coating smooth and beautiful without defects, the entire surface of the machine should be free of oil and stains. When held by hand, the self-feeling feels better in hand, and the handle of the switch should be flat. The length of the cable should generally be not less than 2 meters.

Sixth, check the nameplate and instructions of the electric drill, the nameplate parameters of the tool should be consistent with the 3C certificate. Instructions should have the manufacturer and production plant details of address and contact information. The nameplate or certificate of conformity should be traceable to the batch number of the product.

Seven, hold the drill by hand, turn on the power, frequent manipulation of the switch by hand, so that the tool frequently start, observe the tool switch on and off function is reliable. At the same time, observe whether there are any abnormalities in the TV and fluorescent lights at the site. In order to confirm whether the tool is equipped with an effective radio interference suppressor.

Eight, the electric drill power run for one minute, running with the hand, the hand should not obviously feel any abnormal chatter, observe the commutation spark, its commutation spark should not exceed the level, generally from the inlet of the tool to look in, in the commutator surface should be no obvious arc. When running, there should be no abnormal noise.

Translated with www.DeepL.com/Translator (free version)