The choice of drill depends on the specifics of the upcoming work. Sometimes you can do with a hammer drill, and sometimes you need a more professional tool. To choose a drill, you need to know some features of various types of this tool.
Two types can be divided:
A punch drill is a less powerful tool than a punch. Her drilling function is basic. It is great for working with materials such as steel and wood. With the help of a drill, the tiles are also drilled. In order to work with not very hard materials at home, it is quite suitable ordinary drill.
The puncher is a professional tool. The drilling function is not basic. Usually during operation, the blow function is not disabled. The perforator is a great tool for working with concrete. With it you can make holes in the concrete walls of large diameter.
A simple drill can work where small hole diameters are required. For example, it can produce holes in concrete with a diameter of up to 13 mm, in wood - up to 20 mm, and in steel - up to 8-9 mm. For larger openings, another, more powerful tool is needed.
Drills have three basic characteristics, according to which they differ.
It is a mistake to assume that the power of the drill depends on the number of revolutions per minute. In fact, the opposite is true: the maximum rotation speed of the drill depends on the power.
Drill - The screwdriver has two main functions:
Each model can have one of the two predominant functions. Therefore, choosing a tool, you must immediately decide what will be the priority: drilling or unscrewing screws. The choice of drill-screwdriver depends on the specifics of the upcoming work.
The most convenient version of the drill-screwdriver is a cordless drill. It can function where it is impossible to connect an electrical cable. During the construction of a new house, for example, there may simply be no access to the power grid nearby. Drill with battery will save the day.
How to determine whether the drill is more focused on drilling or twisting? To do this, look at such characteristics as:
If the tool has a revolutions per minute of about 1000 or higher, then this is an excellent drill for drilling. If the figure is closer to 400-500, then this is definitely a screwdriver.
Cordless Drill When choosing a model with a battery, you should also pay great attention to the battery itself. There are a lot of different devices of this type on the market today. Batteries are:
Nickel-cadmium batteries should be removed immediately. It is not environmentally friendly. Because cadmium is a harmful allergen. Nickel - metal hydride devices are not bad. Lithium-ion batteries are of the highest quality, but there is still little tool on the Russian market with such devices.
The battery must have sufficient capacity so that it does not have to be constantly charged. Therefore, this item should also be properly checked. You can also take a drill with replaceable batteries or one that can be recharged from the mains without removing the device from the tool.
Electric drill-screwdriver works by pressing the trigger. The stronger the master presses it, the higher the drill speed. To work with an electric drill is tiring because the hand is overstrained. When choosing, it is better to buy a professional tool that is maximally adapted for comfortable work.
The choice of a hammer drill depends not only on the type of work, but also on its scope. A non-professional drill cannot function continuously. She needs constant rest. Therefore, if repair is foreseen, it is better to take a professional tool. Of course, it is more expensive. But he will not constantly fail.
The best power tools produced in Western countries. The fact is that there is a highly developed segment of highly skilled workers. Virtually all new developments in the field of electrical devices come from there.