How to make an electric screwdriver unscrew

make, electric, screwdriver, unscrew

How to use an electric screwdriver correctly

Many beginners often have the question of how to use an electric screwdriver, when they first get acquainted with it. This is the case with almost everyone, but learning the principles of operation and rules of operation does not take much time due to the fact that modern tools are convenient and easy to use at home.

Electric screwdriver in the home can be used everywhere, as modern devices in everyday life can easily replace the drill, screwdriver and even the grinder with infrequent use. You need special nozzles for this, which you can buy in many construction stores.

Performing almost any work associated with assembly/disassembly or installation of fasteners is accelerated several times faster when using a cordless electric screwdriver rather than a hand-held tool.

Versions according to application

application variant determined by the shape of the working part of the bit. According to this principle, they are classified into the following types:

make, electric, screwdriver, unscrew
  • for bolts and nuts;
  • with an anti-vandal slot;
  • with fork-type construction;
  • Spring-loaded and magnetic;
  • for drywall;
  • for professional use.

The first variant allows to tighten or unscrew bolts and nuts. Are distinguished by the non-standard shape of the working part, which, unlike other samples is not convex, but has a hole. The advantages of these bits include a wide range of sizes.

The anti-vandal slot variant is also called a “snake-eye,” as their tip shape is adapted to fit a fork wrench. Models with the “fork” design are a variation of the previous type of bit. Externally similar to the flat-head version, but with a slit in the middle. They are made of quality steel, so the advantages include durability, strength.

The spring clip ensures a secure attachment of the nozzle in the adapter. And magnetic tips provide good grip with fastener grooves, preventing the head from slipping. Such variants guarantee comfortable screwing of screws, self-tapping screws in hard-to-reach places, on the ceiling covering. The flexible spring allows fasteners to be tightened at an angle greater than 90 degrees.

Nozzles for drywall are distinguished by the presence of a limiter, which prevents damage to the material when performing installation. Experts recommend avoiding strong pressure when screwing in self-tapping screws, as plasterboard sheets are very fragile.

Professional bits are characterized by reliability, high durability and long service life. Made of high-quality metal, coated with a special protective coating. They are chosen for screwing a large number of fasteners. If more than 400 screws can be driven in with this bit, there is no need for replacing it.

Professional models include a torsion bit for an electric impact screwdriver. In terms of appearance it is distinguished by a narrow section between the shank and the slot. Also in the design there is a flexible insert in the form of a spring that works for twisting. This feature allows you to screw a self-drilling screw into a hard material (e.g., to drive a self-drilling screw with a screw head into metal).

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Experts recommend buying different versions of the tooling by the set, as their piece-by-piece purchase will cost more.

Option four

You can cut new faces on a torn or damaged screw head. Or rather, to deepen pre-existing but frayed edges. The easiest option is to make a single notch under a flathead screwdriver. To do this, use an angle grinder, metal saw, dremel. However, in the case of a hard metal self-drilling screw, this is problematic. In addition, part of the fastener should protrude above the surface to allow for notching.

Drip a little bit of Moment glue on the damaged head of the screw or self-tapping screw. Wait until it has hardened a little, then put a screwdriver in the hole and hold it there for about five seconds. The glue will set and the screwdriver will not slip anymore, you can slowly start unscrewing.

Use an extractor. This is a special tool for unscrewing naughty bolts, but it will work on self-tapping screws and screws, too. The secret of the extractor is that as it rotates counterclockwise it grips the fastener more and more firmly and does not allow it to break free. But before using the extractor, drill a hole in the screw along its vertical axis, so that the tool can be inserted. In the case of an ordinary screw it is possible, you just need to choose a thin drill. But hardened steel self-drilling screws are very difficult, the drill bit will simply walk away.

make, electric, screwdriver, unscrew

Bits. bits

The electric screwdriver comes with several kinds of bits with different shapes of bit tips.

Straight-edged bits are designed for work with fasteners that have a single slot. Depending on bit length and depth, the right bit can be selected.

The shape of the Phillips bit is selected similarly. the width of the slot and the size of the fastener head itself are taken into account. In order to work reliably, the bit edge must engage firmly in the slots; otherwise it is possible that the slotted edges can “stick” together.

To fix the bit in the chuck a special nozzle with a magnetized holder is used that does not let the construction fall apart and reliably holds the bit in a variety of positions.

To secure the bit and bit holder, the sliding part of the chuck must be unscrewed.

Insert the bit and tighten the chuck as far as it will go.

There are also very handy double-sided bits that can be fixed in the chuck without a bit.

How to use the cordless screwdriver: helpful tips for use

After you buy a screwdriver, follow these simple guidelines for use. Then the tool will work long and well:

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  • Switch the screwdriver off before you connect or disconnect the battery;
  • Do not overheat the tool by taking breaks;
  • Adjust the torque control clutch correctly;
  • After applying high RPMs, set the engine to minimum and idle for a few minutes to allow it to cool down;
  • Check the cord of the mains screwdriver, and for cordless screwdrivers, check the mains charger cord. If the tool or charger occasionally loses power, the cord must be replaced;
  • Do not use the impact wrench in the rain or snow. You should only use the screwdriver under a roof in damp conditions.

How to control the speed and torque

The rotational speed is changed by a switch that is located on the body of the screwdriver. High speed for large screws and self-tapping screws, and for drilling if this feature is present.

Many models have a torque limiter clutch. You can ascertain whether the power tool is equipped with a ratchet by looking at the numbers on the rotary ring. Some users do not understand the significance of the socket and leave it untouched. Using the ratchet, you can adjust the depth of the screwdriver. When the material is too soft, the flat of the fastener can easily be sunk in and drive right through. When using small fasteners, very high torque can destroy them. The ratchet prevents screwdriver bits from shearing off and wearing out. To find the right value on the adjustment ring, make several passes, starting with the minimum. Maximum torque for the drilling mode. But only if this feature is present.

Torque limiting clutch

The start button also controls the speed, but no more than that set on the switch. Let’s say you set the switch to first speed, which is stated to 800 rpm. When the trigger is pulled as far as it will go, the speed will not go any higher. And the torque at maximum is low, meaning you can’t drive big tapping screws and drill. And if you set the switch to maximum speed, you can drill and the speeds will be much higher.

Adjust speed, torque and reverse when the tool is off.

Drilling mode

If you decide to use the screwdriver as a drill to drill a hole in wood or plastic, you must place a straight piece of wood under the objects you are drilling to make the hole good. That way you can avoid cracking and chipping when drilling.

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There are a few rules for drilling holes in metal. Bore hole location must be bored out. This helps to avoid slipping of the drill bit on the metal surface. When selecting drill mode on the screwdriver, do not forget that drilling metal often breaks the drills at the metal exit. To avoid this, try not to press too hard on the screwdriver while drilling. If the drill bit is stuck, turning the screwdriver to screw out mode will help you unscrew it. If you drill a part of small size, then in order to hold it, use a vise.

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Changing tools

During home repair work or other operations, the handyman often has to change the nozzle. To avoid this procedure delaying the process, you need to know how to insert the bit, drill bit or screwdriver correctly into the electric screwdriver.

The tooling is fixed in a special element called a chuck. The selected bit must be clamped manually, with a wrench or automatically (without the latter). The way of fixing is determined by the type of the chuck.

Chuck types

Most models use a quick-action version of the tool holder. To carry out the procedure with one hand put the nozzle between the open cams, and with the other slowly press the trigger. In this case, the cartridge case will rotate clockwise. On keyhole models, the new bit is inserted in the socket and rotated in the same direction as far as it will go.

To remove the drill bit or bit, reverse the tool, lock the chuck and press the start button. The cams are unclenched and the nozzle is easily removed.

Make sure that the drill bit or bit is tightly clamped in the chuck by turning the tool on in idle mode. The bit will not wobble or deflect if it is inserted correctly.

Maintenance instructions for the tool

electric screwdrivers require minimal maintenance. For the tool to work properly it is necessary to follow the manufacturer’s recommendations, not to use it for tasks that are not listed in the data sheet, not to overload it too often. Periodically lubricate the inside of the chuck and rotating parts with machine oil.

Store the tool in a dry place, away from heat, humidity and sunlight. Wipe the housing with a clean, dry rag after each use to remove construction dust. If your electric screwdriver has drips of mortar on it, you can clean it with a well wrung out soapy rag.

If you follow the rules of operation, do not use the tool for tasks that exceed its capabilities, you can significantly simplify repair and construction work. To keep the electric screwdriver working for a long time and not to malfunction at inappropriate moments, it is necessary to take timely care of it, to monitor the condition of parts and recharge it before use.

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