Repair the apartment, and especially - building a house, it's hard to imagine without the use of power tools. Electric planes, chainsaws and circular saws, woodworking machines, milling machines, jig saws, drills, hammers, screwdrivers, planes, and angle grinders machines (grinders), and Wall Chasers - this is not a complete list of tools designed to provide invaluable assistance in carrying out these works. Not all builders or DIY embarking on repairs, have your own full instrumental arsenal, submitted by all the leading models, such as the Bosch or Black & Decker. Usually do an audit of the tool that is available, and for him to re-buy the missing. The most common mistake in this case - buy a multifunctional, versatile instrument, and insufficient attention to some of its technical and operational parameters. To work newly acquired tool has not been interrupted and marred by disappointment, both in the model and its manufacturer, to choose the right tool, and then correctly apply it. Most major manufacturers are working long and hard to build each model instrument. After a thorough cleanup and release into production they all tend to correspond to their passport parameters. However, not all consumers are bound by the rules of operation, and most importantly - not always correctly make the choice of the power. This seemingly trivial task, in fact, complicated and responsible. Below are recommendations to help the proper selection of power tools. Professional - unprofessional Power is a professional and non-professional purposes. Some firms, such as the aforementioned firm Bosch, to reinforce the differences between these two types of tool paints them different colors. Professional tool assumes his long, sometimes around the clock, using a continuous operation and heavy loads. Therefore, all its components are calculated by the manufacturer for such conditions. Nonprofessional tool has a weaker design their sites and requires work breaks at regular intervals. The difference in price between professional and nonprofessional tool is essential. Therefore, if after the repair or construction sites - has no intention of working in the construction team with his instrument, stop in lay. You can take and professionally, in the hope that it will serve for many years and decades. Yes, this can happen and probably will happen, but over a period of time is very likely threat of obsolescence. Power Supply There are two types of household tools - AC or built into the instrument housing the battery. Buying a tool for AC, you need to verify its degree of security (see below), and if it imported, then whether it is certified for use in our networks. Tool powered by batteries advisable to buy only if you are coming regularly work neelektrofitsirovannyh objects. This tool, of course, in something useful - there is no reference to the power source does not need wires, often interfering in remote places. He can get out into the yard to the car or the garage. But this same tool has some negative qualities. First, the short duration of work between charges. Secondly, many batteries require his constant use. This tool can not be put on for years without the use of - the battery may fail, but its replacement will cost about one-third of the cost of the instrument itself, and sometimes more. And finally - a tool with battery backup is quite expensive. Safety Power is connected to an AC voltage of 220 V must have a reliable electrical protection. Otherwise it can become a source of not only a serious blow to the current dire consequences, but the current hit with a tragic outcome. Most manufacturers of the instrument has a special character double insulation. It is a double square, executed in various graphic design. One of these decorations is shown below: Double insulation - this is two levels of protection from the current strike. The first level of insulation is placed on all electrical components of the structure. The second level of isolates all the elements of corpus tools. Tools, double insulated, you can connect to the network via wire circuit - a fork with two pins in the socket without earth. Tool should fly only with double insulation. Preference should also be given to models that have special protection against an accidental launch. This defense is usually that the permission to push the main start button is confirmed by pressing one additional button. Universality of Many manufacturers tend to make your power tools, especially drills, multi-functional. Such an instrument besides the main function can perform a few extra. The market offers many models of drills that can drill, cut threads, work with wood screws, but they also can be drilled with a bang, ie, serve punch. This tool is more suitable for a small amount of work or for use as a "duty" in the household - in case you need something to edit and produce their own. Some vendors have tools go a step further - offering a set that includes a drill as the main power module and a few attachments to it: plane, angle grinder, circular saw, jig saw, etc. Such a set of make out usually in the form Suitcase "For the master." If the drill is equipped with more punch and function, at first glance this set covers all the requests. You should not stop their choice on these sets. It must be remembered - each operation has its own peculiarity, requires its own power, speed and duration of the instrument. The work tool with an overload or limit its ability to lead to its failure. Good universal tool not exist in nature. In an amicable way - drill should just drill, drill only punch, but only a screwdriver turn the screws. Opt for a tool with additional features can be used only if their application will be from 15 to 20% of the estimated amount of work. Design features a nice addition to the appearance of power tools should be comfortable and as easy. At the same time when choosing between the tool with the gear box made of aluminum alloy and the tool with the gear box of impact resistant plastic is better to stay on an aluminum box, although such a model and may be a little harder. The service life of the reducer greater, and the probability of accidental damage to the external influence - is minuscule. Instrument housing must have an ergonomic, ie comfortable to hold and shape of the body, and controls should be easily accessible. If the instrument is equipped with an additional cover, then its structure must be solidly fixed and should not create a situation in which the consumer will be forced, at least temporarily remove it. Important "little things" for certain types of tools can be called absolutely necessary two devices - the maximum speed regulator and the starter. In the presence of the soft starter tool can continuously gain momentum in proportion to the depth of pressing the power button. One important detail - the moment of coupling limit, which protects the electric tool against impermissible loads and increases its service life. The most common situation is to create an unacceptable burden, such as drills - drills jamming at the time of drilling. Another significant change - the presence of reverse rotation. This property will be especially useful for drills. Without a reversal can not be threaded or unscrew the screw. What if the drill is reversible, it is absolutely necessary and yet another device - speed controller. If you purchased a powerful and heavy instrument, preferably the presence of a starting current limiter. Such a tool more smoothly gaining momentum, not a "twitch" in his hands and does not create an unnecessary load on the grid. For an instrument with a large selection of dust (grinders, jig saws, planes, cutters) is desirable to have an adapter - a special partrubok on the tool body, with which you can plug a vacuum cleaner. The choice of a particular product if the model of the power is selected and it meets all the requirements, you should proceed to the selection of a particular product. No need to take the first sentence retailer - so you can buy a tool only the leading manufacturers, which is well established as a technology, and to control the output. Spend a few test the inclusion of two or three products. The purpose of these inclusions - definition of build quality power tool collection. You can use them to draw important conclusions about how to collect gear, how to pick up a pair of main gears (Bulgarian), did not win a bearing units, etc. Include consistently offered products and compare them to the level and nature of noise. More than kachestenno collected articles noise should be smooth without dips and subsequent refinements, without knocking, which are transmitted on the cover. But the product selected by the most smooth noise, should be subjected to yet another test. Turn it on and then set the maximum speed off. Notice how it stops. Reducing speed should be smooth, gradual. With the engine switched off at the last stages stopping products clearly audible noise of all the nodes and links. The product should not stop as a "petrified" or close to it. If this happens, then something in him is not right - drag bearing assemblies, there is no gap in the right gearing, bad "coasting" from the electric motor and a lot of things to talk about that specifically can only know the product design. In this product a lot of energy expended in overcoming resistance to rotation and the motor will overheat quickly, and the probability of failure is high. In this case, you must repeat the entire selection of products first. If the product stops smoothly and the noise of the rotating mechanism is not manifested some rare knocks - it's what you need. Success!
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