How to unscrew a self-tapping screw with an electric screwdriver

How to unscrew a screw with a torn cross: simple ways

Repair of various elements of the car body and major components does not do without solving the problem of corrosion, oxidation of the bolts. As a rule, craftsmen at the factories thoroughly treat all the fastening elements. High-quality grease is present on the threads of all seats. Do not use such compounds for further repairs. After water gets on the surface of the threads, the connections get stuck, and it becomes too difficult to dismantle hardened bolts.

Craftsmen use three effective methods to solve this problem. Choose a suitable screwdriving tool according to the capabilities of the car owner.

Remove a rusted bolt or nut by tapping

The tapping promotes the gradual destruction of scale and rust. To properly dismantle the fasteners, you need to take a small hammer and apply blows, trying to turn the hardware. This method helps to quickly unscrew the connection.

The force to unscrew should be moderate so you don’t have to drill more holes. If the process is done correctly, the bolts should be thoroughly cleaned of rust and treated with graphite grease.

Using solvents

High-quality compositions against rust and scale are expensive and are the most effective means. However, on the market you can find a lot of budget versions of domestic production.

The most popular is considered an aerosol composition WD 40. The product quickly penetrates into the micro gaps and gradually dissolves the corrosion. In addition, the hardened bolts are unscrewed with brake fluid, kerosene and white spirit. For maximum effect, you should wet any cloth with the substance and wrap it around the hardware for a while.

The thermal method

If the above methods do not give the desired result, there is one way out. fire. Heating of elements and momentary cooling allows to free the threaded joints from scaling quickly. After heating with a gas torch or other device, the hardware must be cooled with machine oil.

Screws can be loosened with improvised means in almost any situation. All you need is a flat or Phillips head screwdriver, open-end wrenches, screw heads, grease and a little effort.

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Scotch tape or duct tape

A bit is a special bit that fits in the chuck of a drill or an electric screwdriver. Its use allows the user to tighten quickly various fasteners, such as screws, bolts or self-tapping screws. According to their classification bits can be:

There are also special bits for nuts, as well as similar devices, which are made in the form of a star. To ensure that, during construction or repair work, the bit does not constantly fall and does not slip away from the screw, it can be glued using ordinary duct tape. To do this, you need to take a small strip of duct tape, attach a self-tapping screw to the bit and tape it around the outer circle of the cap. It is worth noting that you do not need to apply a large amount of duct tape, as it will still have to be removed after the work.

If you do not have any duct tape on hand, you can use ordinary scotch tape or the so-called masking tape. To do this, you need to cut a small strip of duct tape and make a hole in its central part. Then insert the self-tapping screw into the hole and place it on the bit with the electric screwdriver. After that the tape is neatly glued together with the self-tapping screw.

Cut the new edges

If the integrity of the surface is not important, you can try to bore the head under a flat screwdriver. This can easily be done with a wire saw, a dremel or an angle grinder. Modern self-tapping screws are made of hardened metal and resist a hacksaw. Old screws are made of raw metal and can be easily sawn through. It remains to take a screwdriver and with a strong push to turn the fastener.

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An additional method of unscrewing would be to glue a suitable nut with epoxy or “cold welding. We choose the nut to fit tightly to the fastener. After waiting for the glue to harden, use a wrench to twist it. This method is simple and safe.

How to unscrew a screw with a torn edge on an iPhone

I opened up another 6233 with dead bolts and once again got the impression there’s nothing better than a good pair of small wire cutters. grip the bolt properly by the reamed edge and gently unscrew it

Let it be, sometimes you have bouts of idleness, you can read and write

[QUOTE=asg-gealt;226407]I opened up another 6233 with dead bolts and again made sure that there’s nothing better than a good little wire cutter. you grip the bolt properly by the reamed edge and gently unscrew it

I take a dental diamond cutter and make a cut for a flat screwdriver. Then just unscrew it without any effort.

An electric motor, a chuck and collets for different sizes. I got it at the flea market. Ask anyone who sells foil fiberglass, they have everything you need. 12V motor. It is very easy to use this tool to open the metal screens on cell phones. You can insert any drill bit from 0.5 to 4 mm and drill out the same screws. Under a microscope you can easily straighten our favorite screwdrivers, etc.д. The cartridge and collets are sold as a set in a clear plastic box.

How to remove a screw

Unscrewing of broken screws from metal construction is quite simple because the head almost never sinks into the metal because of its hardness. In case of breakage, any screw or self-tapping screw can be unscrewed from the metal profile with standard pliers.

The situation with wood can be much more serious. The wood is soft, so it doesn’t provide much resistance to the screw head during screwing, and the screw can sink in deep enough without any problem.

Therefore, in the usual way (with pliers), to unscrew such a screw is quite problematic. There are several ways to remove a broken screw from wood. Let us explain the above methods in more detail.

Unscrewing with removal of the wood surrounding the head

Chisels or a chisel are used to work on the wood around the head of the screw

This method is used if you don’t regret to spoil the appearance of the board into which the screw was screwed. This is the safest method, which basically boils down to removing the wood fibers from the place where the screw head is located, and then extracting it in any convenient way.

After that, the chips are removed from the surface

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The sequence of operations is as follows:

Then unscrew the screw in any suitable way, e.g. with pliers

Work until the space in diameter of 20 to 30 mm from the center of the screw head is free. The depth to which the groove is made, must correspond to the depth of the plunge of the head of the screw.

This method of unscrewing is much less likely to break the screw

In this case, at the initial stage of unscrewing, the pliers are held at a 45° angle, but when the cap starts to show from the surface of the wood, you can unscrew the screw by holding its thread.

unscrew, self-tapping, screw, electric, screwdriver

Removing a screw with a split

Broken head screws are one of the most common types of screw breaks

It is usually caused by poor quality of material, by using the wrong bits or by applying too much force.

It is very difficult, if not impossible, to remove such screws with an ordinary screwdriver

To solve the problem of the torn off slot, it is necessary to “stuff” it anew. To do this, you need to use a screwdriver insert, colloquially referred to as “bit”. You can use a regular or double-sided bit.

One end of the bit is inserted into the damaged slot, and the other end is struck with a hammer a few times

Next you can use an ordinary screwdriver.

After the flat is “renewed”, the screw can be removed with a normal Phillips screwdriver without any problem

If the screw is difficult to turn

At the beginning, the head of the screw is heated with a blowtorch

A situation that also occurs quite often. When the wood is wet (or has dried out), when the material is too hard, or when there is no hole for tightening the screw. In this case, heat must be used to heat the screw and the screwing area.

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Then the wood in the area of the flat bar is heated up with an iron

The wood shrinks considerably as a result of this action. Locally, its structure at the location of the screw changes.

After that, the screw can be easily unscrewed with an ordinary screwdriver

When the flat bar is missing

A broken off cap is also quite common

The main causes are still poor quality material or excessive force when screwing.

A new slot can be created using a file with a triangular cross-section

In this situation you can try to remove the remnants of the screw with pliers. If it does not succeed (for example, most of the thread is in the wood), you can make a new slot.

Then the screw can be removed with an ordinary screwdriver

Using the extractor

The shape of the working surface of the extractor allows it to be used for extracting screws in various situations

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In most cases, you can even use a special insert. an extractor.

Simply use the extractor insert with a screwdriver to unscrew the screw in question

The use of the extractor tool helps you to remove all the above mentioned ‘problematic’ screws: deep-headed, ‘slotted’, ‘tight’, etc.д.

How to remove a torn-off edge of a screw How to remove a torn-off edge of a screw?

How to remove a screw with ripped edge

Why a bit can get stuck in an electric screwdriver

No matter whether it is an expensive or cheap tool, jamming of the clamping device is not uncommon. There are several cases where this occurs:

  • When trying to use the largest size drill bit allowed, the jaws of the chuck are spread to the maximum value, after which it is often impossible to squeeze them in the normal way.
  • The bit or bit that has jammed cannot be pulled out because it cannot be unclamped, in most cases because the cams are not evenly pressed together.
  • Jamming of the jaws can be caused by free movement during clamping and unclamping. The culprit is debris, chips and scale that get caught under the shaped parts of the jaws.

Unfortunately, it is not possible to work with an electric screwdriver in such situations, regardless of whether it is in working order. It is possible to cope with the problem yourself, in severe cases it is better to contact the service center to specialists.

Why the edges of the screw are torn off

There are several negative factors that explain why a screw head won’t unscrew:

  • corrosion of the metal, as a result the structure of the material is disturbed, it loses properties, becomes less strong, crumbles, this leads to the fact that the master during the repair will not be able to perform dismantling, unscrewing the rusty fasteners;
  • The screw tends to screw in if it is installed in a construction made of unsuitable material.

The problem of how to unscrew a screw occurs when the tool is not used properly.

The problem occurs if the rules for using the tool are violated

Phillips screwdriver

  • the tool is of poor quality: the metal is too soft, which makes the screwdriver slip out all the time, the sharp edges are blunted through wear and tear, this also prevents the screw from fitting firmly in the slot and the tool may not be properly selected for the job (it does not match the size of the head)
  • Weak efforts in the process of unscrewing the fastener, while the screwdriver is not held in the slot, constantly slipping, as a result, the head is deformed, for this reason it is called “plumed”;
  • during installation, the fastener was installed in a construction material that does not match the screws, so it screws through, you can not pull out such hardware with a screwdriver.

Screwdriver bit

A common problem with power tools is choosing the wrong speed. Use moderate force to drill out the fastener. The duration of the electric screwdriver should be short. If the screw is drilled intensively, the slot will deform. As a result, you will have to additionally solve the question of how to unscrew the screw with a damaged head, which will increase the duration of the work.

If the screw is drilled intensively, the slot will become deformed

How to use a screwdriver correctly

Standard drills and screwdrivers perform many functions:

There is a technique that should be followed to avoid making mistakes with each of these jobs, as well as setting up the appliance before you start doing them. It includes the main items:

  • proper preparation;
  • changing the nozzles;
  • setting the torque speed;
  • How to screw in and screw in fasteners correctly;
  • chuck rotation direction.

Let’s consider each of them in more detail.

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Preparation for work

Before you start using your helper for its intended purpose, you need to understand its kit. In different models they may be different, but the basic set, as a rule, is similar:

  • The case in which everything is stored;
  • device for charging the battery;
  • removable battery;
  • a set of nozzles (depending on the price category, their number may vary).

Once you have chosen the purpose for which you will currently be using the unit, you should:

  • adjust it, depending on the thickness of the wall (or other surface),
  • set its power,
  • pick up the appropriate drill bit/self-tapping bit,
  • charge the tool.

Before touching the surface it is recommended to make several revolutions by idling, noting the correspondence of its speed and direction of rotation of the nozzle to the thread of the fastener.

Perform a change of nozzles

It is necessary to understand the design feature of the device. The element into which the bits are inserted is called a chuck. It can be inserted (depending on the purpose):

  • drill bit (to make the holes);
  • bits (there can be several, depending on the different shapes of the edge) in which, in turn, are set:
  • screwdriver,
  • self-tapping screws.
  • straight edge. Designed to perform work with a slot (a fastener in which there is one slot. On its length, depth depends on the choice of such a bit);
  • cruciform. On the width of the fastener slot and the size of its head, this particular bit shape is chosen.

To avoid the possibility of the fastener slipping, it is necessary to install it carefully so that the edge fits tightly into the slot.

To change the bit, you must use a simple method to reinforce the chuck in the bit. To do this, you need to:

Setting the torque

The torque control makes it possible to set the rotation speed of the screwdriver. The higher the speed, the more power is needed and the faster and deeper you can drive the screwdriver or drill bit into the desired surface.

The adjusting ring is located near the chuck and it has numbers corresponding to each speed. Set them on the basis of the density of the material in which the hole will be made. You can switch speeds during operation, and their strength will depend on the pressure on the starter button.

You have to choose your power for a certain material, e.g:

  • When drilling drywall, you can set the value from 2 to 4;
  • if you work with hard wood, it is advisable to set the highest possible number of small diameter screws in order to achieve the greatest possible degree of accuracy.

Screwing and tightening fasteners

The procedure for adjustment should be carried out in a simple sequence.

  • the nozzle is inserted into the slot (screw, self-drilling screw);
  • the electric screwdriver is switched on using the start button;
  • when the screwdriver is screwed in, it switches off automatically.
  • the control lever on the device is set in the reverse direction;
  • the nozzle is inserted into the slot;
  • the trigger can be pulled and the screws can be unscrewed.

Direction of rotation of the chuck

All wrenches have a trigger that changes the direction of rotation, because it can be operated by either screwing or unscrewing the fastener. there is a value (forward or backward) corresponding to the twist knob.

4 Ways to Prevent Stripped Screws

It is not possible to switch during the actual operation. If it becomes necessary to change direction, you must stop working and be sure to wait for the screwdriver motor to come to a complete stop.

To block operation (for example, when changing parts), the switch must be set to the middle position. In this mode for safety, the device will not be able to turn on at all.

Tips for using a screwdriver for women

Many people wonder how to work with an electric screwdriver by women. First of all, you should be aware that using the device requires physical strength. You must hold it firmly and be very attentive.

Please note! Women are advised to give preference to the lightest models possible. It is desirable to buy compact devices.

When working, it is worth observing the following rules:

Using an electric screwdriver has a number of features. To get a quality result, it is necessary to adhere to the basic recommendations of experts.

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