In the field of construction and repair, new, more reliable types of fastening elements, which include, have been quite actively used for a long time. In this regard, the question is how to quickly pull out anchor bolt from the floor, ceiling or wall, is quite relevant. The difficulty of removing a bolt of this type is due to the fact that it has a complex design.
Basic Techniques
Anchor bolts, which provide the highest reliability of fastening, are used in cases where it is necessary to fix heavy structures on the surface of a wall, ceiling or floor - massive chandeliers, doors and window boxes, modules suspended ceiling. The main element of the anchor bolt design is a thin-walled metal sleeve, on the side surface of which there are longitudinal sections. The bolt itself is screwed into the sleeve, thereby drawing a cone-shaped nut into its inner part, which opens its walls and ensures reliable fixation of the entire structure inside the previously prepared hole. Anchor bolts, due to the peculiarities of their design, allow you to securely fasten elements weighing more than 100 kg to the surface of the wall, floor and ceiling.
To use an anchor, you must first drill a hole of the appropriate diameter into which the fastener shell will be inserted, and a bolt or threaded rod is screwed into it. If problems with how to use such a fastening element most often do not arise, then the question of how to remove the anchor is quite relevant. The high reliability of fixing such a bolt often leads to the fact that it has to be literally broken out of the wall, floor or ceiling, and the hole formed as a result of such manipulations must be sealed using cement mortar or putty.
Meanwhile there are several simple ways, allowing such a bolt to be pulled out of the wall with minimal damage to the surface condition.
- First of all, you should unscrew the nut on the stud and try to drive it deeper so that it stops pushing the cage apart. If you managed to do this, then you can easily pull out the clip, and then the stud bolt itself.
- Threaded connection nuts with a stud can be drilled out, and then, if the distance at which the stud protrudes above the nut allows, it can be driven deeper so that it stops pushing the cage apart. After this, as in the previous case, it is necessary to remove the clip from the wall, and after it the anchor bolt itself.
- You can also drill a hole in the central part of the stud bolt, in which a thread is cut using a tap. A bolt is screwed into the resulting threaded hole, which must be locked. While holding the screwed-in bolt, you must try to twist the nut on the main stud so that it turns together with the cage. When the additional bolt is fixed, you need to remove the lock nut from it and unscrew it. Then you can cut the main nut off the stud using a grinder and drive the stud into the hole. Once you have released the clip, it can be removed using pliers or other clamping fixtures, and then pull out the pin itself.
- Without doing anything, you can try to hammer the stud into the cage as much as possible along with the nut screwed onto it. After performing this manipulation, you need to break the concrete surface around the head of the anchor bolt, going 1 cm deeper. After this, you can try to pull the fastener out of the wall using ordinary pliers.
- If the anchor bolt is made of not too hard metal, you can simply drill it out of the wall. However, even with such a careful approach to removing the anchor bolt, you should be prepared for the fact that the section of the wall, ceiling or floor on which such a fastening element was located will have to be restored to its original form using putty or cement mortar.
There are many videos on the Internet that give a detailed idea of how to remove an anchor bolt from any surface with minimal difficulty. When performing this procedure, you can follow the instructions offered in a particular video.
How to unscrew a regular bolt from a threaded hole
Problems with unscrewing from a threaded hole can occur not only with anchor bolts, but also with ordinary bolts. This situation often occurs when the bolt has an almost completely missing head or its side edges are severely crumpled. To remove such a bolt from the wall, you can use one of the following methods.
- You can rotate a bolt whose head is badly worn using a sharp core placed at an angle to the top of the fastener.
- On the worn head of the bolt, using a grinder, make a slot into which the tip of a screwdriver is inserted and try to use it to pull out the fastener.
- You can remove a bolt that cannot be removed from the wall using a tap with a left-hand thread by screwing it into a pre-made threaded hole. If you do not have such a tap on hand, then instead you can use a screwdriver, the tip of which is sharpened to a “cone”.
- To remove the bolt from the wall, you can also use a tap with a right-hand thread. To do this, the tool must be screwed into a hole previously prepared in the head of the fastener, and then firmly fixed to it by welding.
- The most radical method Removing a bolt from the wall involves drilling it out. For this purpose, use a drill whose diameter is closest to the size cross section the fastening element itself.
In conclusion, look at seven the best ways removing broken bolts.
Quite often, when performing various kinds repair work, you may encounter certain difficulties. It happens that a seemingly simple and understandable procedure causes a lot of problems. So, for example, not everyone can answer the question of how to pull a dowel out of a wall without preparation. The thing is that the design of this fastening element is precisely aimed at holding it firmly in the wall and preventing easy removal. However, there is a way out of the situation, and even more than one, which will be discussed further.
Methods of carrying out work
So, as mentioned above, there are several options for completing the task. Some of them are simpler, some are more difficult. This decision must be made individually based on your own qualifications and what is ultimately required. The point is that the main reason why the thought comes to removing the dowel from the wall is that it is unnecessary. For example, when a mirror hanging in one place is decided to be moved or removed altogether. Will remain in the wall old fastener- dowels and screws. And, if the latter are easy enough to unscrew, then you will have to tinker with the dowel. Otherwise, the dowel will not easily be damaged appearance walls, but will also interfere with wallpapering, if this is intended. The air that remains inside will cause the wallpaper to swell in this place, and this, of course, is extremely undesirable.
- Perhaps the easiest way out of the situation would be not to remove the dowel from the outside, but using some metal rod of comparable diameter to drive it deep into the wall. The hole that is made for the dowel is usually a few millimeters longer than its length, and this should not be a problem. The dowel is hammered inside, and the recess in the wall is filled with mastic at the same level as the wall. The result is flat wall, on which you can glue wallpaper.
- You can screw the self-tapping screw into the dowel a little, and by pulling it, try to pull it out together with the dowel.
- Another option for getting a dowel out of the wall is to drill it out. To do this, select a drill equal in diameter to the fastening element. After this, the fasteners are drilled out using a drill. That is, a hole is actually drilled, as if there were no dowel there. As a result, as in all previous cases, a hole will remain, which is puttied at the same level as the wall. This method is also quite simple and accessible.
- However, if the dowel must be removed, you can resort to another method. Using a drill with a drill bit equal to the diameter of the dowel itself, you need to drill a series of holes around it. They need to be done at a distance of a few millimeters from the dowel. In most cases, four drilling locations will be sufficient. After which, a self-tapping screw is screwed into the dowel, if it has already been removed earlier, and with the help of pliers, for example, slightly shaking it all in different planes, the fastener is pulled out. The holes made around the dowel will weaken the integrity of the wall, and therefore the procedure will be quite simple. However, it is important to remember that this method will lead to the formation of quite big hole, which must be sealed with putty.
- If the listed methods are unacceptable for some reason, then you can proceed as follows. A self-tapping screw is screwed into the dowel to a depth of at least half of the entire length of the fastener. Then, the screw must be heated. For these purposes you can use various burners. If you only have to pull out one dowel, you can get by with a simple lighter. So, the screw must be heated until the characteristic smell of burnt plastic appears. This will mean that the dowel has warmed up sufficiently. Plastic, exposed high temperatures becomes plastic, and therefore the dowel can be pulled out. If it was not possible to do this right away and it has cooled down, then the procedure must be repeated until the self-tapping screw and dowel are removed. The remaining hole is sealed.
There are a sufficient number of ways to remove a dowel from a wall and you can choose from it, but no matter how you decide to act, you must strictly follow safety precautions, which is the basic principle of performing any work.
Video
How to remove a dowel from a wall:
Apartment renovations require careful preparation, so you need to calculate the anchor for pulling out. In most cases, the problem is easily solved and does not require special costs, and the owners ask questions about how to remove the dowel from concrete wall. Since a smooth wall surface is necessary for subsequent cosmetic finishing, nails and screws protruding from it are an additional problem.
Removing a dowel from a wall without knowledge and experience in this area is not so easy. Here you can’t do without special construction tools. Their choice is determined by the purpose and option for removing the dowel.
Which method should I choose?
In a situation where the fasteners remain in the wall along with the nail, everything is very simple. To do this, you will need to loosen it - strike the dowel-nail several times with a hammer from all sides. Next, you will need pliers to sharply pull it out of the concrete.
It is worth considering whether this operation will damage the top layer of plaster, which may be useful. If you cannot do without losses, then you can drive the dowel into the wall along with the nail. The procedure must be successful, because the depth of the hole is always greater than the length of the dowel itself. Afterwards this place is leveled using mastic or gypsum plaster.
In many situations, it is necessary to pull out a dowel that has been removed a long time ago, but its plastic part remains in the wall. In such a situation, you can choose the most suitable option tearing out.
Methods for removing a plastic dowel:
- The most well-known method is to calculate the anchor for pulling out, that is, select a self-tapping screw suitable for the dowel and screw it into the dowel two-thirds of its length. After which you will need pliers or another tool to pull it out. If you don’t have a self-tapping screw at hand, a manual corkscrew will do. The dowel is pulled out like a cork from the neck of a bottle.
- You can remove the dowel in another way. To do this you will need to drill several holes around it on short distance. After this, using special tool you need to unscrew it. The disadvantage of this technique is that the end result should be a hole with a much larger diameter than it was before.
- If it was not possible to remove the dowel by pulling it out, you can drive it into the wall. The process is not as easy as it might seem at first glance. To simplify the situation, you can trim off the protruding edges of the dowel, then drive it in, and then putty the area.
- When a drill is available, the dowel can be drilled. The main thing is to choose the right drill. It should be the same or larger diameter. The dowel should come out of the hole like plastic shavings. Afterwards the hole needs to be filled with putty.
What to do if there is a piece of a screw or nail in the fastener?
The main reason for a nail or screw to break is high pressure, so pulling out with pliers will not be effective. In such a situation, you need a soldering iron or gas-burner, any of these devices will help heat the plastic dowel so that the material becomes plastic and soft. The procedure should take place quickly, until the plastic has cooled. If the first attempt is unsuccessful, it is recommended to repeat the procedure until the dowel with the fragment is removed.
Let's work with wood
Today, most people use plastic dowels, but some prefer wooden dowels. The difference in their extraction is not particularly large. The cap can also be pulled out using a self-tapping screw, which is screwed into a wooden product, then the removal process is carried out using pliers. If you don't have them at hand, a nail puller or other construction tool will do.
Another method that is especially popular is pulling it out in parts. To do this, you will need a chisel and a hammer, with the help of which the dowel is divided along the fiber. Then the resulting fragments are removed with a knife or screwdriver. You can also use a drill. This option is provided for dowels made of soft wood. The drill can be replaced with a hammer drill. It is necessary to carry out the procedure carefully to avoid holes large diameter in the wall.
In most cases, wooden dowels are used for installing wooden windows. To do this, take 3-4 fasteners with which to fix the window sill, and several pieces for installing the window frame.
Metal dowels are not as widespread as plastic ones, because their use implies the presence of special equipment. There are two options for removing such fasteners.
One way is twisting. The second is loosening with a hammer. If you can’t carefully unscrew the dowel, you can try to loosen it with a hammer. When the fastener is flush with the wall, it can be removed; to do this, you will need to make several small holes located around it. Then the actual extraction occurs.
Removing the dowel from concrete surface – not an easy task, but by applying the right way, you can quickly pull out the fasteners with minimal losses to the surface. To complete the procedure in the shortest possible time, you only need to prepare necessary tools and choose the right way to pull it out.
How to quickly remove a dowel from a concrete wall? updated: November 11, 2016 by: Artyom
When renovating your home, you often have to deal with the consequences of past repairs. And you don't always need them.
One of these inconvenient consequences is an unnecessary old dowel sticking out in a completely unnecessary place, left behind by you or your repair predecessor. A nuisance is a nuisance, but you have to get rid of the dowel somehow. You do need a flat surface.
What to do in this case?
You will need:
✔ The hammer is heavier, by the way, household goods can be purchased wholesale here season-hoztorg.com.ua;
✔ Wine corkscrew;
✔ Construction gypsum;
✔ Hammer or electric drill;
✔ Electric soldering iron;
✔ Tweezers;
✔ Thin-walled steel tube;
✔ Needle file;
So:
1) If a piece of steel screw with a plastic dowel is stuck in the wall, you can use two options:
A) first: you will need a thin-walled steel tube with a diameter equal to the self-tapping screw. Using a file carefully, you need to make four teeth on the edge of the tube. After this, you can use the tube as a kind of drill. Place the tube against the hole. Drilling should be started at the lowest speeds, gradually accelerating them. As a result of these actions, the tube will fit perfectly into the hole, but it will come back out with a self-tapping screw.
b) second: Use an electric soldering iron. If you put a soldering iron on the end of a broken screw and heat it well, the temperature will melt the plastic dowel, and you can pull out the remaining screws using ordinary tweezers.
2) There are times when a metal dowel-nail turns out to be unnecessary in the wall. A very good thing, but unfortunately not where it should be. Here, of course, it will be a little more complicated, because the metal dowel sits in the wall much stronger than any other. But this problem can also be solved. To pull it out of the wall, you must first loosen it greatly. And since this is iron, to enhance the effect, take a heavier hammer. If it doesn't work right away, drill a hole as close to it as possible and try again. Having loosened the metal dowel, it will be easy to pull it out of the wall.
3) When unscrewing the screw, it happens that the plastic dowel remains in the wall. If it doesn't really bother you, forget about it and continue with the repair. But if you decide to start removing it, don’t be too clever and take a regular kitchen corkscrew. Screw it into the dowel, like you would into a wine bottle, and with some effort, carefully pull it out.
4) Do not forget, after removing any dowels and dowel-nails, to carefully cover the resulting holes with construction plaster so that the wall surface is smooth for further repairs.