If the key is lost or broken and there is no duplicate, opening the door lock may be the only way to get inside the room. There are two ways to resolve this situation: try to open the door yourself, or contact a commercial company that provides such services. There is another option: to invite a locksmith from the Housing Office, but in this case you can’t count on a quick result, because first you have to fill out an application for a call, and then be patient and wait for the visit of the master, the only one for the quarter. It will not be easy to open the lock on your own, especially when it comes to the front door, on which two locks are installed. Let's take a closer look at all the possible options.
Opening an interior door causes the least problems, since simple locks are often installed in such structures. Such designs are equipped with a latch on the one hand, and a keyhole on the other. Parents of inquisitive kids often have to deal with this problem. A child can easily slam the door and turn the handle, but the reverse process can be difficult for him. Then parents face two tasks at once: how to open the lock, and how to keep the door itself safe and sound. Here's what to do in this situation:
The choice of tool depends on the shape of the keyhole. If it is round, then you will need a thin solid object: an awl, a straightened paper clip, a knitting needle or a toothpick. For a well with an elongated shape, you will need something flat: a screwdriver, a nail file, scissors or a knife. To open the door lock, you must insert the tool into the well. Pressing on it, turn the door handle. The main thing is not to overdo it so that the tool does not break and get stuck in the well.
There is another way to open a slammed door. To do this, a flat object is inserted between the end of the door and the box, with which you need to slightly push the latch towards the lock. It is enough to move it just a few millimeters.
If the lock has a well on each side, and an inserted key remains in one of them, it will not be difficult to deal with the problem if the design does not provide for a threshold. Under the door you need to push the spread out newspaper as far as possible. Then we push the key out of the well with a sharp object, which should fall on the newspaper. We take it out and open the door.
Opening entrance doors is a more difficult task, since they usually have at least two locks. It is worth thinking carefully before trying to solve such a problem on your own: an unprofessional approach can adversely affect the state of the door itself, and replacing a metal entrance structure is not a cheap pleasure. When getting started, do not forget that the main goal is to open the locked locks, and not to break the door.
The process of this event will depend mainly on the type of castle. If a broken key became the reason for opening the door, you must first remove the chip from the larva. To do this, first pour a few drops of lubricant into the keyhole: WD-40 or machine oil. It will take 15–20 minutes for it to spread evenly over the well, after which the chip can be removed. If a small part of the debris protrudes, this simplifies the task. It should be carefully hooked with pliers or tweezers and, swinging from side to side, pull it out. If it is not possible to hook a chip on the outside, two thin objects will be required, for example, an awl. We grab the stuck part with the tips, swing it and try to move it. When the chip is removed, you will soon open the door to the apartment: a good craftsman will make a duplicate of the two broken halves, and this will solve the problem.
Now let's look at ways to open the door without a key if the key has been lost and it is not possible to make a duplicate.
If you set the task of opening a cylinder lock and keeping it in working condition, then you need to have virtuoso burglar skills. Such devices have a high level of secrecy, but for an experienced craftsman it will not be difficult to open the cylinder lock with a hairpin or an ordinary paper clip, however, it would be more convenient to use master keys. Consider an emergency option: how to open a door lock with a paper clip. We will use it as a master key, but we will also need a “fold”, which will serve as a screwdriver. The task is to straighten the paper clip, slightly crochet the edge and insert it into the larva. Now you have to focus on hearing. Our task: to put the pins of the secret mechanism in the correct position. They must be lifted in turn, using an impromptu master key and a roll. As already noted, this is a very difficult task, which is almost impossible to cope with without proper skills.
There is a less delicate but more affordable way break the door lock. It will require tools: an electric drill with a drill designed for metal, a flat screwdriver and a hammer. Sometimes the lock can be cracked without drilling, so you should first try this option:
This task is completed - the door can be opened. If this method was unsuccessful, you will have to take a drill. We direct the drill directly into the larva and drill until we have gone through the whole secret to the end. After that, we take out the larva and open the door.
It is important! The method of drilling or knocking out a cylinder lock is completely powerless if the device has burglary protection.
Using master keys 
Drilling
The lever mechanism can be broken or you can try to open it in a delicate way.
To break the lock, it is necessary to remove the main pin of the structure, which is responsible for moving the levers. To do this, you need a drill with a drill for metal, a hook or a bent strong wire, a paper clip. But even with a tool, this task will not be easy, since you need to drill strictly in the place where the reference point of the secret mechanism is located. When it is drilled, you need to insert a bent hook into the hole and turn it. In this case, all levers move freely, and the door can be opened. As in the case of cylinder mechanisms, this method is completely ineffective for locks that have protection against picking.
Now let's look at how to open a door lock with a lever lock using master keys or items that can replace them: paper clips, hairpins, pins. The opening of lever door locks is performed with two master keys. The first is inserted into the keyhole until it stops against the main board. The second one must alternately select the desired position of the levers so that the main pin moves. You should be prepared for the fact that this process can take a lot of time and end in complete failure if you have never opened locks before. Therefore, it is more expedient to invite specialists after all.
If a rack mechanism is installed on the entrance structure, it will not be very difficult to open the door lock without a key. Since the rack lock is well protected from rough impact, we will not consider options for how to crack the front door. With a normal tool at hand, we can carefully open the mechanism in one of three ways.
Method 1 Method 2 Method 3
Padlocks do not have great strength, but quite often they are used to protect utility rooms, sheds, basements. If the keys are lost, such locks are usually picked because they are of little value. Here's how to break padlocks:
Losing your keys is not a reason to panic, but it's also not the best time to urgently master the skills of a locksmith. Opening doors without a key, even if you have the right tool at hand, is not an easy task. Inept handling of the lock can only aggravate the situation. If you are not confident in your abilities, it would be advisable to contact a specialized company whose specialists have all the necessary equipment and know exactly how to open the front door without a key so as not to damage the door and lock.
