How to choose a screwdriver

How to choose a screwdriver

Men are divided into two types : the first dream of a powerful ” gun ” with which you can go hunting , or ” walk around town “, and the second – on the performance of screwdrivers, with which you can perform any job . Each home worker should be in the arsenal of such a device is ready for everyday work . It is an essential equipment needed for repair and construction work, furniture assembly . We will help you to choose an excellent device for continuous use, the benefit of alternatives is amazing.

Screwdriver – a hand held power tool, designed for loosening and tightening hardware , screws , nuts , drilling , and other purposes. A key advantage of the device – the ability to adjust the torque, which allows you to achieve the necessary characteristics to solve a particular problem. It is generally accepted grading for household and professional tools , but in reality, the differences much more.

The main characteristics of the screwdriver :

Torque. The higher the value, the easier ” to drive ” screws and nuts . So, for the installation of gypsum requires a high torque (800 rpm or more), to unwind – Low ( enough 150-200 rpm) .
Type of food. Screwdriver can be actuated from both the network and from the battery. The second embodiment is much wider spread since the technique is often used in the absence of a stationary electricity.

Battery capacity. This parameter is measured in ampere-hours and has a direct impact on the duration of the device without recharging.

Method of mounting attachments . Drills and bits can be set to either the keyless chuck , or by using the key.
Torque control and reversibility . These parameters are required for each model , as they are the distinguishing characteristics of the device .

Additional characteristics . Optional devices are equipped with lights, stabilizer , automatic supply of hardware , pulse and shock mode .

Define what types of screwdrivers are:

1. Household screwdriver . Everyone wants to buy a reliable , yet affordable unit . Most of the devices that are commercially available are designed for occasional use for domestic purposes : collection of furniture, hardware replacement , repair equipment. Their main advantage – the reasonable price , good looks , long-term storage . However, these devices can not be used for direct application because of their service life short. Furthermore, such tools often have a low capacity , respectively , low torque serious inconvenient in operation.

2 . Building (professional) screwdriver . This device has a high capacity , excellent torque , fits well in the hand. Fine control helps to select the optimal mode and speed of rotation of the drill or other attachments . Professional devices are very convenient : they are characterized rubberized case , robust assembly that allows you to transfer mechanical stress . But there are also disadvantages : the high price and target -oriented.

3 . Compact screwdriver . Power tools , home appliance repair and other fine tasks require small devices that have low birth weight . Compact screwdrivers tend to have extremely low birth weight ( 100-200 grams ) , small size (the size of the working part – 10.6 cm) , high strength. But there are drawbacks : First , the cost of such devices is quite high. Secondly, to use the device for demanding applications (installation GCR ) will not work because it does not stand a high intensity operation. Third , the technique has a small range of speeds .

4 . Screwdriver -powered network. A separate type of equipment , which is popular among construction workers. Its main advantage – higher torque , whereby the screws are in the metal, as the oil. But there are certain disadvantages. Typically, such devices have only one speed of rotation, and to stop it requires a special delimiter . Mains power , on the one hand, it is an advantage ( no need to change batteries ) , and the disadvantage that the mobility model leaves much to be desired. The unit is heavy , large size, and high cost.

5 . ” Impact ” screwdriver . The best part of this technique is focused only on the untwisting and untwisting of hardware , but not drilling into concrete and other hard materials. ” Impact ” screwdriver can make a hole in the brick , stone , wood surface , because it has a special mode . It is very convenient for drilling holes in hard to reach places where not fit a regular drill or a drill . There are drawbacks: high cost , rapid deterioration, short stint on battery power.

6. Cordless screwdriver and wrench . Another subclass of such devices – screwdrivers for fine needs : the collection of household appliances, mobile phones , automotive work. They have low torque and accurate tightening . As soon as the difficulty of travel , the movement of the nozzle stops. The main drawback of these devices – the narrow scope of use : they can not be used for drilling and for other similar purposes.

 

Other useful tips on choosing a screwdriver :

Before buying the device hold the handset in your hand , weigh it, make sure that the work is really easy.

Pay attention , ” Torque “: for household and professional work, he is critical .
Rate angle bits (nozzles ) : it should be a little more than 90 degrees.

In no case do not buy a screwdriver with a nickel- metal hydride or nickel- cadmium power supply. Only a lithium- ion battery has a long service life and easy to use.

For installation of plasterboard , PVC windows best buy screwdriver with 2 different types of supply : mains and battery.

For professional use only buy vehicles with two power sources : while one is in use , the other can be charged .

The presence of light on the instrument simplifies work in all conditions, so this option is highly desirable .

Buying wired screwdriver , make sure that it has a limiter that stops the movement of the head at the right moment .

The work is very convenient keyless chuck , while conventional fasteners (using the “key” ) significantly reduces productivity .

Many brands produce a wide range of solutions for household and professional use, labeling them appropriately labeled . For example, Bosch blue color means a professional tool at AEG – yellow.

how to choose a screwdriver :

The purpose of the acquisition. It is important to understand why it is necessary device : household use , professional work , repairing gadgets and technology.

Device power and the availability of additional options. The higher the torque , the easier it is to use a screwdriver for professional work. Buffer will drill the wall , ceiling or floor.

Way power , capacity and number of batteries . Well suited for electrical compact device , but for the collection of metal – stand-alone solutions with increased capacity power supplies.
Weight of the device . The greater the mass of the screwdriver , the more difficult to work with him .
The size of the unit. For individual work (installation of curtain rods , electrical ) device dimensions are critical , so this option should also be considered.

Brand. Purchasing equipment for the construction and repair works , you need to pay very close attention to the manufacturer ‘ . The most popular brands considered as Bosch, Makita, Stihl, which deliver solutions in different price categories.