Applications
Every person in the house should have an electric drill. The mini electric drill will not take up much space. It's good when it is at hand. We need it quite often.
Different attachments are used to do different jobs. One glance at the photo of a mini-drill is enough to understand that this is a tool with which you can tighten a screw in a hard-to-reach place, moreover, do it in such a way that it will not be visible near it.
Often, during the interior decoration of a room, you have to spend more time on the design of joints, corners, fixing all kinds of hinges and strips, beautiful decorative details with many small elements. They are needed under the ceiling, in grooves, near the floor.
The main thing is that the diameter fits. The thinnest screw can be tightened. The door hinges of the old wardrobe can be repaired, new ones can be screwed on.
Even with a mini drill, you can process a surface with a small area. An interesting task is to make buttons with your own hands, for example. Once people, faced with automation, standardization, mass production for the first time, only dreamed about this.
You can use it to restore a coffee table and do it quickly and accurately. A variety of ideas are easy to put into practice.
This thing is necessary, useful, in a word, it allows you to save time, effort, and not waste them on solving super-tasks. How did primitive people manage to drill thin and neat holes in the stone? Nobody knows. It is better to buy a mini drill with attachments, just do it, entrust the search for an answer to such a difficult question to archaeologists and historians.
The characteristics of a mini-drill depend on the manufacturer, model. The configuration is constantly being improved and complicated. How to choose a mini drill with optimal parameters?
Main characteristics
It is important to pay attention to the speed of revolutions when buying a mini electric drill, an engraver. The best mini drills are those with higher RPM. After all, only in this case will the drilled hole be perfect.
What about the attachment for grinding, polishing?
After all, only in this case will the drilled hole be perfect. What about the attachment for grinding, polishing?
It's no secret that this is a delicate process - surface grinding, polishing. In this case, a high RPM is not always necessary. If the mini drill has several modes of operation, there is a speed switch, this is great.
It is good if the mini drill works both from the mains and from the battery. Sometimes there is no outlet nearby. It so happens that the lights are turned off. If the mini drill has a battery, the lack of electricity will not prevent you from completing the job you started.
But more and more often, a new type of power grid, three-phase, with a voltage of 380 V is supplied to residential buildings. It is designed so that many household electrical appliances with high power will work in the apartment at the same time. Many electrical appliances are made for such a power grid.
The ergonomic features of the case are of great importance. The color of the case is important. It depends on him how quickly the drill can be found among the "working" disorder. The weight of the device, the configuration is important. If you don't like the drill, it may not be worth buying. It should be convenient to work - for this it was invented.
It is worth asking what set of nozzles the manufacturer offers
It is important that the mini drill has a cooling system. It guarantees long-term uninterrupted operation
If there is no cooling system, the tool will overheat and shut down. Whether it is convenient is a good question.
Battery selection + (Video)
How to choose the right one battery for screwdriver? In order to objectively answer this question, consider the possible options.
For cordless drills, three types of batteries are used:
- Li-ion type. A popular battery type that supports a large number of charges (up to 3000), charging is quick. They are lightweight and are considered an environmentally friendly product. Suitable for long-term work. The disadvantages include poor resistance to low temperatures: in the cold, the battery is almost instantly discharged.
- Nickel-cadmium type. It can only be charged up to 2000 times, and a complete discharge is likely to damage the battery. A tool with such a battery is inexpensive but less efficient.
- Nickel-metal hydride type. The number of charges is only 1500 cycles. Its heavy weight is also inconvenient to work with.
So, after analyzing the types of accumulators, let's say that it is better to choose the first option.
Classification and types
There are three types of mini-drills, depending on the power source and design.
Standard electrical appliances powered by the mains. An ordinary network mini-drill has a distant external resemblance to a thick, large ballpoint pen, the end of which is equipped with a rotating working attachment. Such a device, due to its small size and ergonomic shape, is convenient to take with one hand. Electrical equipment is often equipped with a flexible shaft (sleeve), which serves as an extension, which is attached to the main collet. The tip of the sleeve is equipped with a clamping chuck, which simplifies the work with the dremel. The device itself can be conveniently placed on the table, and with your hand you can hold one end of the bending nozzle.
- Mobile devices with rechargeable battery. Although the cost of cordless mini drills is higher than networked models, there is no fundamental difference between the two. The only difference between devices with a battery is that they have their own power source, which makes it possible to use them without being tied to an electrical outlet. Such equipment is completed with a conventional charger and an adapter for connecting to the car cigarette lighter socket.
- Suspended devices. Suspended models are equipped with a short square or cylindrical body that can be brought to a table or wall. The same sleeve extends from the body part as in standard electric engravers. Suspended devices are equipped with a foot pedal, after pressing on which the power is transferred to the electric motor rotating the working tip inserted into the collet on the spindle. The advantage of hanging mini-drills is the high-quality performance of the flexible shaft, which is very light and easy to grip by hand.
HOW TO CHOOSE THE RIGHT DRILL-DRIVER PARAMETERS? + (VIDEO)
The cost and quality of a product consists of several components. You can find out about them in the instructions for the product. Be sure to find out about these parameters:
- motor power;
- the purpose of the tool;
- number of revolutions and torque;
- information about batteries (if you liked this type);
- how the tip is changed (is it possible to quickly change it);
- some additional functions (for example, a flashlight for working in poor visibility conditions);
- manufacturer.
Now let's take a closer look at each point.
Rule number 1 when choosing a drill of any type - pay attention to the power. In household copies, it is much less than in professional ones.
For minor repairs, 0.6 kW is usually enough; for everything else, it is advisable to choose a power from 0.9 kW.
Another important detail is the torque indicator. The higher it is, the more and power. High torque means the tool can handle tough drilling or twisting.
Convenience in work and its quality will provide such a parameter as the number of revolutions. If the tool is used like a screwdriver, then 500 rpm is sufficient. When drilling, you will need from 1200 revolutions. A good product should be able to set the required number of revolutions.
Rating
Metabo SBE900 Impuls is considered one of the best powerful impact drills.
Every year Metabo's electric tool becomes the leader of the marketing charts, overtaking such giants as Bosch and Makita. The cost of such a power tool is quite high. The price, for example, for one of the best SBE900 drills, with all the desire to budget, can not be called by any means.
The tool weighs only about three kilograms, has well-thought-out functionality, and is easy to use. The vibrations transmitted to the hand are relatively small. The oscillation frequency can reach several tens of thousands per minute.
The drill has a convenient mechanism that can adjust the rotation speed, its advantage is that it makes it possible to select the optimal torque mode. In order to set the desired mode, there is a tuning wheel located on the front of the case.
The drill body is made of aluminum, it contains a gearbox that activates a switch.
The functionality is largely copied from the models of the best rotary hammers. A clutch is “hidden” inside the body, which reliably protects the mechanism in case the drill unexpectedly jams. Metabo is not cheap, but it is trouble-free and has good power.
If we talk about the shortcomings of this impact drill, then it should be said about the cartridge. He does not handle well with large diameter drills, they slip. A quick-release mechanism is not needed in this design. The best option would be to use a traditional chuck, which is adjustable with a key.
Metabo prices vary as follows:
- Metabo SBE900 Impuls about 20,000 rubles;
- Metabo SBE 701 SP - 15,000 rubles;
- Metabo SBE 760 about 7,000 rubles.
The Makita HP1640K costs three times less than the Metabo SBE 900, so it makes sense to look closely at this good tool. Ergonomics and functionality are thought out to the smallest detail, drilling with a drill is easy and pleasant. For homework, a similar tool is quite suitable. The power is 685W, and the speed can be effectively controlled. The unit weighs two kilograms, which allows you to work with one hand. Among the shortcomings, it should be mentioned: the impact mechanism is weak, but it is possible to work on concrete.
Consider the drill "Bison ZDU-850 ERMM2"
The gearbox housing is made of metal, which in itself can draw close attention. The machine is quite powerful and can function for a long time, 860 W is enough to work within a private household
Without exaggeration, one can say: "Bison ZDU-850" is not inferior to world analogues from Makita or Bosch. The Zubr can work quite tensely, it has a good margin of safety.
Of the design flaws, it should be said about the trigger on the handle - this is not the best idea to control the revs. Reason: it is difficult to smoothly accelerate the drill, at low speeds it is almost impossible to do this.
Another important drawback of "Zubr" is the lack of strength factor for the ratchet of the impact mechanism.
The main advantages of the device:
- good powerful engine;
- minimal vibration;
- duration and reliability in work.
How to choose?
Electric impact drills are a complex complex unit. The choice depends on a number of factors. Before buying, you should consider what the main work will be done by the tool. If you need a drill like a screwdriver for installing drywall, that's one thing. If you need an apparatus for drilling holes in brick or concrete walls, you will need a more powerful tool.
Often, a drill is used as a mixer in putty work, so the best drill is the one that allows you to implement the tasks as fully as possible in a short time.We can say with confidence: there is no point in buying cheap devices. Saving money will not work.
When choosing, you should consider: how often you will have to use this tool. In fact, this criterion is the most important. If the volume of work is significant, it must be performed every day, then it is better to opt for a professional tool.
Buy a unit better than well-known manufacturers, they give a guarantee and know how to do good, reliable things. It is best to buy a drill in a company store, this is also an additional guarantee that the thing will last a long time. In extreme cases, it can simply be replaced.
The main criteria when choosing a hammer drill:
- engine power;
- how fast the cartridge rotates;
- what size the hole can be;
- who is the manufacturer;
- what guarantees exist;
- price;
- what functionality, how convenient it is.