When carrying out renovation work in an apartment, many people often face a situation where they need to replace an old faucet. This largely simple procedure can become a serious problem if the faucet is installed on old metal pipes.
After all, earlier, when installing such equipment, plumbers screwed the mixer eccentrics directly into the bends made of cast iron. However, after prolonged use, the eccentrics stick to the pipe walls, and therefore their removal often leads to the destruction of parts, while part of the thread may remain inside the pipe.
It will be extremely difficult to remove such parts from the pipeline in the future.
This article will discuss how you can avoid such situations and solve the problem without complications in the form of eccentric failure.
How to unscrew a large bolt without a key?
clamp the nut in a rigidly fixed vice and unscrew it, rotating the entire part or assembly, if possible; clamp a small separate vice and try to unscrew the nut with it; use a pneumatic impact wrench; drill out the threaded rod on which the nut is stuck.
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The first rule is to work carefully
So, in most cases, if we are talking about a modern plastic or metal pipeline, there should be no problems with unscrewing the eccentrics. However, in any case, before starting work, you should prepare the necessary tool in the form of a special adjustable wrench.
Now manufacturers make eccentrics with special edges, which allow you to quickly unscrew the element from the pipe.
It’s another matter if you need to replace the old eccentric, but the owner does not want to remove the pipes. In such situations, you will have to act especially carefully so as not to crush the eccentric. If, however, part of the thread remains in the pipe during the process, then you should use the recommendations of specialists.
Additive for eccentric coupler
Adding an eccentric tie is the most difficult stage of furniture assembly. Here it is important to accurately make all the holes, since the quality of the connection of the parts depends on this. The additive is performed using three cutting tools, two drills and a milling cutter. Holes for eccentric couplers can be made using a drill, screwdriver or router. The latter allows you to perform the additive with maximum accuracy.
The diameter of the drill for the eccentric coupler is selected based on the size of the rod. For most types of rods, the diameter of the drill for securing the rod into the part is 5 mm (from the screw side). For the hole through which the rod is connected to the eccentric 8 mm. However, sometimes you come across a reduced rod, in which case a drill with a diameter of 6 mm is used to tightly fit the eccentric coupler.
A milling cutter is used to install the eccentric. The cutter for the eccentric coupler also has another name: Forstner drill. For a standard eccentric, a drill with a diameter of 15 mm is used. Such hole dimensions allow the eccentric to be seated precisely without any gap, which has a positive effect on the strength of the connection between the parts.
Drilling holes can be done manually or you can use a ready-made jig for an eccentric coupler. Using a jig allows you to make holes very accurately with a conventional drill. However, it is often difficult to purchase a jig and you have to make all the holes using a conventional drill. In this case, a drill for an eccentric tie should be chosen special for wood. It is different from the drills that are usually found in every home. Thanks to its special design, it will allow you to drill all the holes correctly.
Using the furniture jig shown in the figure above, you can complete all the markings and make all the holes for the eccentric coupler. The procedure for working with the conductor is as follows. First, the jig is installed on the part and the location of the groove for the eccentric is marked through the corresponding hole on the jig. Next, a cutter is used to make a hole for the eccentric. A marking pin is inserted into the corresponding hole on the jig. Then install the jig on the part and drill a hole for the eccentric rod. So, in several operations, a very precise additive for the eccentric coupler is obtained.
Best answers
ULTRASONIC:
It was such bullshit. The brass eccentric broke when changing the faucet in the bathroom. I sawed it (with a piece of blade from a narrow hacksaw) into 3 parts and broke it out one at a time. I actually damaged the thread a little when I was sawing, then I had to wrap a lot of fum tape around the new eccentric to prevent it from leaking.
Natalia:
Call a plumber
Unknown:
Try driving something like a 3- or 4-sided file into it and unscrew it...
Marat Zagitov:
You can try with a triangular file, as advised, and if it doesn’t work, then try using a piece of a metal blade to carefully cut the creases in 2 or 3 places to the beginning of the tops of the thread, and then gouge them out with a beard. You'll have to sweat, but it's a sure thing. Good luck.
Pavel Makhov:
In general, before starting all these movements, try to pick up a gas burner (such as a plasma lighter, for example) and strongly (until the edge chars on the outside) warm up the threaded segment of the creases (preferably from the inside). The thing is that it’s possible to carefully cut out pieces from the inside (well, as the previous authors wrote :)), but it’s difficult. After all, the stake carving worked out most correctly because the sealant was linen and oil paint. Well, we need to burn them out. And then it’s enough to make a shallow cut along the edge of the crease, insert something flat and wide there and turn it out.
Dimensions
The sizes of eccentric couplers vary. The height of the stand can vary from 38 to 58 millimeters. The diameter is usually 12, 15 or 25 mm, the most common option being 15 mm. The ties themselves can be 5 by 50, 7 by 50 and 7 by 70 millimeters. To choose the right one, you need to evaluate the weight that it will have to withstand, as well as the size of the holes for fastenings. For example, for a small shelf a small tie is enough. But when assembling large-sized products, it is worth thinking about reinforced fastenings with an additional footing and housing.
For shelves, a rod with a length of about 10 millimeters is usually chosen, and the eccentric coupler of large furniture already requires a long stand - from 26 to 34 millimeters.
How to tighten the eccentric
Due to the slight difference in the design of the traditional and adjustable eccentric, their installation differs only in some nuances, but more on that later.
In general, to install an eccentric in place you need:
- Set the locking lever to the “Open” position.
- Use an adjusting nut to calibrate the length of the shaft axis. Tighten it so that there is a small gap.
- Transfer to the adjustment state, an intermediate position between “Open” and “Close”. Install the attached equipment in the desired position.
- Close the lever, i.e. move it to the “Close” position.
- Check that the locking is secure; the lever should not rotate in the “Close” position.
Composition and varieties
Modern manufacturing companies sell many types of eccentric fasteners, which necessarily consist of the following parts:
- Rack;
- Futorka (analogous to a regular nut);
- Eccentric;
- Sleeve made of plastic or metal (stainless steel);
- Plugs.
To choose a suitable mount, you need to pay attention to several criteria:
- Eccentric dimensions;
- Type of stand (double-sided, short – 4 centimeters, long – up to 6 centimeters);
- Method of securing the stand.
When going to the store, you can prepare the necessary photos of the furniture eccentric in advance. Based on them, the sales consultant will immediately select suitable fasteners.
All such parts are ideal for creating products from chipboard, chipboard and even natural wood. Fasteners connect elements in hidden places where they are almost impossible to notice.
The eccentric can only be viewed from the inside. To give the furniture a more attractive and neat look, the fastening is additionally covered with a special plug.
Advantages and disadvantages
Furniture eccentrics are quite popular among both furniture manufacturers and home craftsmen. And there is nothing surprising here. This part has many advantages:
- Ability to withstand heavy loads. The fastening has a high level of reliability. It tolerates repeated assembly/disassembly of structures without deterioration in quality;
- Long period of operation;
- Increasing the rigidity of assembled furniture.
- Easy installation of a furniture eccentric. Almost every person without experience or construction skills will be able to carry out the installation independently. This work will not take much time. To do this, an ordinary screwdriver is enough (provided that the holes have already been made in the furniture).
Please note that fastening does not impair the aesthetics of the finished product. The eccentric is not visible after installation. It does not leave noticeable damage or defects. It has no serious shortcomings, but we will still highlight a few disadvantages.
- Firstly, the relatively high cost. If we compare a furniture eccentric with other similar connections, its purchase will cost much more. If the manufacture of furniture requires a large volume of such eccentrics, then the final price of the product will seriously hit your pocket.
- Secondly, the connection is demanding in terms of marking accuracy. Without this, it will not be possible to qualitatively connect all the parts. Therefore, you need to approach your work responsibly. Don't do anything by eye! Otherwise, there is a high probability of simply ruining the product.
Practice shows that with constant use, the level of the screed gradually weakens. But this cannot be called a problem. If the fastener gets a little loose, you can take a screwdriver and tighten it well.
In general, the furniture eccentric is a reliable, durable and high-quality item. Home craftsmen certainly need to take it into service and use it during assembly.
To technically correctly assemble cabinet furniture and figure out how to install an eccentric with your own hands, you can use video lessons and other educational materials presented on the Internet. In addition, detailed instructions are included with each mount.
Description of fastening method
Before wondering how to tighten the eccentric, you need to familiarize yourself with the device of the eccentric coupler. In general, it consists of two components. This is an eccentric and a rod. The first is on one piece of furniture, and the second is on another.
The connection of furniture parts is carried out by turning the eccentric in the rod. The sizes of these parts can be very different, for example, 34, 26 or 10 mm. The most common is the 15mm eccentric. The size depends on the dimensions and purpose of the furniture that is assembled. For example, for small shelves a 10mm cam is suitable. To connect parts in cabinet furniture, you will need large parts (34 and 26 mm).
What to do if the eccentric breaks
At the moment, professional plumbers have developed several ways to solve this problem. Moreover, the method depends on the quality of the fitting thread.
- If the fitting is of good quality and can withstand serious mechanical loads, then the remaining threads can be unscrewed from the pipe using a chisel. In this case, it is necessary to select the tool in such a way that its pointed part is larger than the size of the fitting. The process itself is as follows. With a hammer blow, the chisel is driven inside the eccentric. Next we unscrew the fitting, holding the chisel with a gas wrench.
- If the eccentric is not of very good quality and is strongly stuck to the pipe. in this case, you need to cut it from the inside with a hacksaw blade into a cross. Next, remove parts of the fitting using a screwdriver.
When carrying out all such procedures, you should put a small piece of material into the pipe, this way you can avoid pieces of metal getting inside the pipeline.
The methods presented above were developed from years of practice and are therefore not taught to would-be plumbers during training. On the other hand, they have repeatedly proven their effectiveness and therefore can be used if necessary.
However, even before starting work on replacing the mixer, the owner of the premises should answer the question of whether it is worth leaving the old pipes or whether it is better to replace them.
Do you know how to unscrew the eccentric from an old mixer if it is very stuck? Share your experience in the comments.
Best answers
Bely Oleg:
Anastasia, you can consider another option - screw the barrels 3/4 into the union nuts of the old eccentrics, and then screw the new mixer onto them. You will need 2 barrels and 4 3/4 spacers.
Vasila:
I just bow...
Guy from the Future...:
Yes, we understand which mixer you are talking about. . Well, what can we offer here... Spin it, Nastya, spin it. . :)) Here, only by being on the spot and seeing all this disgrace can you decide what and how to unscrew it... And so - there are a lot of ways... There is indeed one universal one - a gas wrench, but they do not always manage to make a good grip. . We have protrusions inside such old eccentrics. . You can try to drive a chisel and turn it with a wrench... You can also preheat these places... for example, with a gas burner...
Synoptic:
Typical situation. There was a domestic mixture, but you put in an imported one. Old eccentrics need to be removed using kerosene or kerosene. If it breaks during the process, you will have to pick at the wall to the corner into which it is screwed. Sorry…
How to use a tie: fixation
Eccentric fasteners are used to connect two parts of a product. Let's look at the principle of its operation using the example of fastening a table leg.
How to install a screed in a desk part?
In the upper part of the table leg, you need to drill two holes for the metal retainer.
Two similar holes are drilled on the end of the table (above the newly made holes). As a result, we get an end-to-end channel.
Scope of application
An eccentric tie is often used for furniture that needs to be frequently transported disassembled or stored for storage after each use (folding tables, folding sofas, etc.). Such fittings will not fail even if it needs to withstand a lot of weight - it is very durable, especially when an additional liner and body are included in the set.
Typically, minifixes are recommended for L-shaped and T-shaped fastenings at right angles, because even in such conditions they are quite reliable. Also, eccentric couplers are useful where the design implies the absence of protruding fasteners, for example, they can be used to attach a furniture façade.
In practice, such ties are used to fasten tabletops, bottoms, back walls of chests of drawers, wardrobes, pencil cases, bedside tables and other things. Another area of application is built-in furniture. Various subtypes allow you to select fittings for both large and miniature items.
Furniture fasteners: eccentrics, corners, dowels.
Before the creation of modern technologies and fittings, furniture was made by carpenters. Lock joints, tenons, dowels, wedges were used as fasteners for connecting panels together; the same “fittings” were used in the construction of wooden houses, etc.
Glue was used to make the joints rigid; naturally, there was no talk of any ideal precision in the joints. Only a virtuoso, using tools such as a saw and a chisel, could more or less accurately maintain the dimensions.
Nowadays, such connections of parts are specifically used to give furniture an “antique” style. This article describes the main fasteners and fittings that are used in wardrobes, dressing rooms, hallways, etc.
Dowel
This type of fastening is rarely used independently; it is used only to provide rigidity in conjunction with eccentric couplers.
Its main function is to prevent the panels from moving relative to each other and giving additional rigidity to the fastening. Used in conjunction with an eccentric coupler. It is made from hard natural wood and has a cylindrical shape. This is a very simple and cheap part that has been used in wooden joints since time immemorial.
Screw tie
A screw tie consists of a screw and a barrel; they are used to secure the end of one panel to the face of another. For example: attaching a shelf to a side panel.
This is a very strong fastening due to the large tightening stroke. The only drawback of this fastener is that the screw head is visible from the front of the panel.
You can, of course, close them with special plugs, but this is also not a panacea. The plugs on the outer panel of the cabinet do not look aesthetically pleasing.
Installing this type of fastener requires skills; beginners may encounter such problems as aligning the holes of the barrel with the hole in the end of the shelf, and it is not so easy to pull out an unnecessary barrel from its nest.
But the inconvenience during assembly and aesthetic errors are more than compensated for by the reliability and durability of the connection. connections!
Conical coupler
Conical tie is often used for fastening thick chipboard panels (25 mm, 38 mm)
One of its advantages is the absence of visible caps on the front side of the panels. Unlike the screw in a screw tie, the rod used in a tapered tie is screwed into the panel. The tie itself has 2 holes, one for the rod, which is screwed into the panel layer, the second for the screw of the conical tie.
The disadvantage of this type of fastener is that the tightening stroke is not long; under heavy loads, the holes for the rod screw may become loose over time, and then the tie will simply stop working!
Furniture corner
Quite a simple type of fastener, easy to install. Does not require any additional holes in the panels for its installation. There are both metal and plastic options.
Quite a durable type of fastening and inexpensive in price. The disadvantages are that it is visible and does not look aesthetically pleasing, especially if it is made of plastic. But this is the main type of fastening in built-in furniture, since eccentrics and Euroscrews are used only for fastening chipboard shelves to each other.
Euroscrew
This fastener is often used for assembling kitchen furniture modules and in economy class furniture. Just like with a screw tie, Euroscrew heads or plugs are visible on the front side of the side panel of the cabinet.
Types of fasteners
Furniture ties can be used individually or in combination with others. Some furniture items are designed for special occasions. It makes sense to consider the features of each and the principle of its installation.
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Repair work
Types of faucets
This model is installed on the sink
- Depending on how the mixer is designed, its ability to be installed in one place or another is determined, that is, it can be either a surface-mounted or a wall-mounted version . In this case, in the top photo, you see a two-valve type device, which is designed for installation on a sink or sink. In the same way, a joystick faucet can be mounted on a sink if it is made with one installation pipe on the body.
This model is wall mounted
- But the model of this configuration, which you see above, is designed for wall installation and is held in place by water fittings that are installed when laying pipes . This is a single-lever (joystick) device, but the instructions also provide for mounting two-valve faucets on the wall - the main condition for this is two installation pipes.
Crane axle boxes of various types
- Depending on the adjustment of the faucet, its shut-off valves also change, so if on a device of any model the control is carried out by two valves or two levers, it means that there are faucet axle boxes there . In cases where the half-turn control is carried out by a locking mechanism with a ceramic pair, which you see in the top image on the left, and if there are a lot of turns, then it is a worm gear axle box, which you see on the right. By the way, they are very easy to change and repair, so if you are thinking about how to make a faucet so that it does not leak, you can resort to replacing these fittings.
- Joystick faucet models operate using a cartridge or ball lock - one and the other mechanism has three holes, two of which receive hot and cold water, and one releases mixed liquid through the spout . In this situation, if your faucet is leaking, it is also not necessary to replace it with a new one - in most cases, it will be enough to simply change the faucet cartridge or the ball with its fasteners.
But more often than not, it is the cartridge rather than the ball that is used as the shut-off valve for such faucets - its price is lower, therefore, the cost of the entire plumbing fixture is reduced and the demand for them is greater.
Note. From a technical point of view, when installing plumbing equipment, there is absolutely no difference what type of shut-off valve is installed there. This only affects its operation and repair.
Replacing a faucet on a wall
So, let's find out how to unscrew a wall-mounted mixer - it could be a faucet:
- above the bathtub or in the shower stall;
- with valves (levers);
- joystick (single lever).
First of all, we will need to unscrew the two nuts with which it is attached to the cold and hot water fittings and this can be done either with an open-end wrench or an adjustable wrench, but best of all, with a gas wrench, so as not to select the size, besides, the nut planes may be erased. After removing the nuts, the tap is also removed.
After you have unscrewed the faucet itself, you need to unscrew the old eccentrics from the fittings, since you can only replace the faucet with a new one if it is sized.
That is, the sizes of the eccentrics differ from each other, depending on the model, but this is mainly not the thread, but their length, although on the side of the tap pipe the thread can also change, and on the side of the fitting its diameter remains unchanged - 1/2 inch.
Unscrew the old eccentrics
In order to unscrew the old eccentrics, you can use a thin 12, 13 or 14 open-end wrench between the threads. On a curved neck, there should be two parallel planes for gripping.
But in old fittings of this type they are not always found. Therefore, the most reliable option is pliers - stick one sponge inside and turn it counterclockwise. And if the thread is “stuck,” then you can insert a key between the handles as a lever.
Pros and cons of fasteners
The minifix fastening connection evokes only positive emotions among craftsmen, since it has obvious advantages over other types of fasteners.
Furniture assemblers attach particular importance to such advantages of eccentrics, because they:
- Easily cope with impressive loads. Eccentric fasteners are very reliable and can withstand a large number of assemblies/disassemblies of wooden structures without loss of strength and quality of the connection.
- A very durable and economical fastener.
- Increases the rigidity of the manufactured product.
- Eccentrics refer to fast or quick installation screeds. Assembly of all kinds of furniture with built-in minifixes is minimal in time and all you need is a classic slotted screwdriver.
- The elementary nature of the assembly work allows any average person to carry out the installation with their own hands.
- It does not spoil the aesthetic appearance of the product at all - it is not noticeable after installation and does not leave visible defects or damage.
There are no significant disadvantages to such clamps, but still some disadvantages can be traced:
- The cost of the eccentric is slightly higher than that of typical confirmats. If the assembly of a piece of furniture involves a significant amount of such fasteners, then the final cost of the product will increase significantly.
- The installation technology is not entirely simple; you need to make three holes for fastening and have special, precise equipment available.
- High demands on marking accuracy, without which it is unlikely to be able to ensure the strength of the joints of furniture units.
- During the operational period, the screed may weaken slightly.
To obtain a durable, high-quality and durable piece of furniture, it is worth adopting just such a fastening element.
Video lessons and photographic materials that can be found on the Internet will help self-taught amateurs to assemble cabinet furniture technically correctly. You can also study the instructions that come with the product.
Watch the video in which a specialist talks about eccentric screeds in furniture production:
Source: anatomia-remonta.ru
Installation of equipment
Installation of new eccentrics is carried out in two stages:
- at the first stage it is necessary to attach the adapter to the pipes;
- at the second stage - connecting the adapters to the mixer.
Attaching the eccentric to the pipes
To attach the device to the pipes you will need:
- keys of appropriate sizes;
- insulating material, which can be linen thread, a special compound, FUM tape, and so on.
Installation is carried out according to the following scheme:
- determining the optimal position of devices for connecting the mixer. At this stage, it is necessary to calculate the number of eccentric revolutions that must be made for correct installation of the equipment;
- fitting of a mixer;
- insulation of threads using the selected material;
Thread sealing with linen thread
- installation of the eccentric.
To protect the eccentric coating when tightening the device with wrenches, it is recommended to use a gasket or union nut.
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Assembly sequence
To install eccentrics, you must have a certain tool:
- a set of drills with a diameter of 7.0 mm (for the rod body), 53.0 mm (for tightening the stand);
- screwdriver;
- Forstner router with a diameter of 15.0 mm;
- screwdriver, pencil, awl and square (ruler).
The assembly sequence is as follows:
- a restex stand is screwed into the plane of the panel body, to which another part will then be connected at the end side;
- An eccentric is mounted at the end of the second shelf, tightening the rod by turning it towards itself.
To maintain utmost punctuality in fitting the required holes, a template is often used.
Some background information
For many years, in the domestic production of furniture made from laminated chipboard, a screw tie was used. In our country it is called “kon”, and in Europe it is called single-element or Einteilverbinder. Despite the low price of this screed, it has one significant drawback - the confirmation heads, even under the plugs, are very noticeable on the walls of the case. And this, in turn, makes it not of very high quality and attractive. Furniture assembled without visible fasteners looks more solid and beautiful and automatically belongs to a higher segment.
Choosing a new eccentric
When choosing new eccentrics, the following parameters should be considered:
- Material:
- The most common are eccentrics made of brass. They are characterized by low cost, corrosion resistance and durability in the absence of external mechanical influences;
- It is recommended to purchase solid brass products. Eccentrics can also be made of bronze, copper and other alloys. The use of such devices is advisable when installing a mixer and pipes made of similar materials.
- Adapter sizes:
- a short eccentric, 3–4 cm long, is capable of leveling a gap whose size is no more than 8 cm.
- an elongated eccentric 4–5 cm long is selected when the gap is 8–10 cm.
- a long adapter (more than 5 cm) is installed to equalize larger gaps or the need to move the mixer higher or lower relative to a given level.
If the installation of the mixer does not require displacement of the pipes, then a straight eccentric is installed.
Types of eccentrics depending on size
- Input diameters. The standard cam has a diameter of ¾ inch for connecting the device to water pipes and ½ inch for connecting the device to the faucet. On sale you can also find products with other sizes in accordance with similar parameters of pipes and mixer.
Eccentric with standard parameters
