DIY polypropylene collector: a distribution collector of heating, a comb, a welded manifold, how to assemble a homemade polypropylene collector, the production of a home -made polypropyle

Especially in the winter, insulation and heating are essential components of a comfortable, energy-efficient home. Although there are expert solutions available, some homeowners choose to do it themselves for a variety of reasons, including customization and cost savings. This post will explain how to build a polypropylene collector on your own that can be used as a heating system distribution manifold. This collector, also called a welded manifold or comb, is simple to assemble at home with simple tools and easily accessible materials.

Polypropylene collectors are becoming more and more well-liked among do-it-yourselfers because of their robustness, affordability, and simplicity of assembly. Polypropylene collectors provide a less complicated option to traditional metal collectors, which can be prone to corrosion and require specialized equipment for welding. Homeowners can build a dependable heating distribution system without requiring complicated fabrication techniques by using polypropylene pipes and fittings.

Choosing the right materials is the first of several important steps in building a DIY polypropylene collector. The majority of hardware stores stock polypropylene pipes and fittings, which are easily obtained and come in a range of sizes to suit different heating system needs. Selecting premium parts is necessary to guarantee the collector’s durability and effectiveness.

Cutting the polypropylene pipes to the appropriate lengths and joining them with solvent cement or fusion welding are the usual steps in the assembly process. The configuration of the plumbing system and the quantity of heating circuits are two examples of the variables that affect the collector’s layout. Precise planning and measurement are essential to guarantee appropriate operation and suitability for the heating system.

The collector can be safely mounted to the wall or another appropriate surface after the pipes are connected. Before integrating the system with the heating system, it is imperative to test it for leaks and proper flow. A do-it-yourself polypropylene collector can effectively distribute heat throughout your home, increasing comfort and energy efficiency, with the right installation and upkeep.

DIY Polypropylene Collector Learn how to assemble a homemade polypropylene collector for heating distribution.
Distribution Collector Understand the concept of a comb or welded manifold for efficient heating distribution.

How to make a collector yourself?

The video provides an intriguing rundown of a homemade distribution collector:

The project’s design should come first before any of this practical device is manufactured. In this instance, the following information must be considered:

  • the number of heating contours in the house;
  • the number and characteristics of heating equipment, which will be mounted at the moment (boilers, boilers, etc.P.);
  • the number and characteristics of heating equipment, which is planned to be included in the system in the future (heat pumps, solar panels, etc. P.);
  • number and characteristics of additional equipment.

Extra gear translates to:

  • cumulative tanks;
  • Plum cranes/filling;
  • Filling valves;
  • thermometers and pressure gauges;
  • security groups and t. P.

You must ascertain the size of the connection for each set of pipes (feed+return), as well as for other system components, after accounting for all of these factors. Next, you should be aware of each contour’s direction. The collector allows pipes to enter from the side, below, or above.

Indirect heating boilers and solid fuel boilers typically cut into the collector’s ends. Electric and gas boilers are typically installed atop a camshaft; however, it is more practical to cut such equipment from the end if necessary, connecting via a hydraulic shot of or with their own circulation pump. Most frequently, heating contours are crashed from above or below.

You can now begin creating a paper distribution collector. A basic pencil and a notebook sheet in a cell work well for this (fans of high-precision projects can use a millimeter sheet). Although the spacing between the contours can be freely chosen, a 100–200 mm spread is advised (anything less or more will just be inconvenient). Within the same bounds, there can be variations in the distance between the heating boiler and the feed and reversal of each circuit. If this distance is the same for every circuit, the device will appear more accurate and will be visually highlighted.

The distance between the supply and the circulation in the project must adhere to the specifications of a specific model if it is intended to link the admissions modules or the industrial production pumping station.

The collector’s feed and return departments are represented by two long rectangles that you must draw on paper, with the feed and return indicated on them. It is now required to use the device’s ends, such as noting the floor boiler’s connection. The connections for every heating circuit and every piece of extra equipment are then sequentially shown on the diagram.

The plan illustrated the project of a homemade distribution collector for a private home’s heating system. The names of all contours must be mentioned, as well as the thread diameters.

To prevent any confusion during the project’s drawing process, it is advised to sign each outline and element and to indicate the size of all threads right away.

It would make sense to take another sheet and redraft the scheme of the scheme after the draft drawing has been assembled, reviewed, and thoroughly considered. It is now clear how many components and devices are required to make the collector, as well as the features of these components. You can prepare the tool, buy everything you need, and create an estimate.

When making the camshaft, the metal must be free of rust, precisely marked in accordance with the design, and all required holes must be cut out.

The easiest way to cut a square section out of metal pipe is to use a homemade manifold. This is essential:

  1. Cut two pieces of metal pipe of a suitable size.
  2. Cut the segments of a round metal pipe.
  3. Clean the metal details of the future collector from rust.
  4. Make markings in accordance with the previously compiled scheme.
  5. Cut all the necessary holes.
  6. Collect the collector according to the scheme and grab the joints with welding.
  7. Steam all pipes and threads.
  8. Private the necessary mounts.
  9. Clean all welding seams, removing the scale.
  10. Degrease the surface of the device and paint it.

It is advised to let the paint dry for a few days before beginning installation. The completed collector still needs to be connected to the heating system.

All of the joints, welcome threads, and fasteners need to be boiled after the distribution collector is put together. The seams are cleaned after welding.

Collector device

There are two components to both the DIY polypropylene collector and the factory metal collector:

  1. The first element provides the connection of the supply pipeline leaving the boiler, with the supply pipes of heating contours, t.e. This part of the collector distributes the heated coolant. This element of the collector is also important to make the contours independent, which simplifies their prevention and repair. If there is a collector for repairing one of the contours, it is enough to block the corresponding valve that will stop supplying the coolant to this pipeline.
  2. In the second part of the collector, pressure adjustment in each circuit is ensured, due to which the intensity of the circulation of the coolant is determined. The effectiveness of all heating systems directly depends on the proper adjustment of the movement of hot water in the highways.

Inexperienced technicians frequently introduce a number of extra components into the system under the mistaken impression that doing so will improve heating performance. Such a solution is typically ineffective because it is not possible to competently intervene in the heating process when the cause of the decrease in effectiveness is unclear. DESIRE ADDITION Reduced heat transfer of heating frequently finds its most essential, ideal solution in a polypropylene collector.

Do -it -yourself manufacture

Making a DIY collection system for a private home by hand is far more difficult than building a traditional one- or two-pipe model. This is because each collector branch’s wiring needs to be precisely calculated.

It is preferable to install the camshaft with the capability of a hydraulic compensator in addition when setting up a system in a large home with multiple highway branches. It is distinguished by the way the return pipe is connected to the coolant and the input pipe is connected to it.

These additions offer several noteworthy benefits:

  • alignment of the pressure level in the reverse pipe and input, where the coolant expands greatly;
  • the risk of hydraulic shocks decreases;
  • The costs of the coolant are reduced, since the flows of the incoming and outgoing direction are mixed.

Installing such an addition in a collector-type heating system right after the security unit is required. It ought to be situated close to the boiler. homemade collector for heating.

It is necessary for every distinct highway branch to be linked to its own hydraulic comb nest; in other words, they shouldn’t be connected. The collector heating system’s warm floor is intended to use this design.

Generally speaking, the placement of specific groups on them allows for the automatic control of the heat carrier influx. The only way the comb is compensated for a more intricate collector heating scheme is through circulation pumps and shut-off valves for every contour.

These distribution nodes are only put in place to ensure that every highway branch is roughly the same length.

Correct calculation

The throughput of the pipe and the total amount of coolant in the system must be the first two factors taken into account when calculating the collector heating system in an apartment or other private home. The water proportions in the incoming and output pipes must be kept constant. This will allow heat to be distributed evenly throughout a two-story house.

Another crucial component for the system’s proper operation is its hydraulic balance. Numerous software programs are available to carry out all the required computations. Make them yourself by installing small collector systems.

You must apply the following guidelines in order to obtain such calculations:

  • The incoming pipe should have a diameter equal to the sum of the sections of the pipes of each individual line;
  • In the collector with one case, the distance between the input and output tubes should be at least 6 diameters of the pipes.

These are the standard guidelines for figuring out collector heating in a home or apartment. Depending on the particular circumstances and the room’s design elements, any one of them can be altered or added to.

Every circuit’s circulation pump is chosen separately, just like every trunk branch’s. Numerous variables can affect their power, but the length and volume of coolant in the branch are the main ones.

Scheme of the distribution comb

Planning precedes production, during which a feature of the heating system’s components is developed:

  • how many circuits will be, respectively, exits to them;
  • the number and power of heating plants;
  • The availability of additional equipment: pumps, fittings, thermostats, manometers, tanks and more.

It is advised to divide the warm floor contours into discrete areas. Batteries are needed for autonomous operation in spaces where there is a large temperature differential, like a garage and a kid’s room. Each floor and wing of the house has its own separate coolant supply system.

Think about the side that the result will come from. Boilers, whether gas or electric, are connected from above or below. From the end of the collector, if a solid fuel unit or pump is utilized.

Use the rule of three diameters for the calculation, where the connected pipe’s cross section is three times that of the comb. The heating contours are joined at a distance of 10–20 cm, which also happens to be the separation between the input and output groups. Their diameter is precisely calculated by multiplying by 3. Going in a bigger or smaller direction is not worthwhile because it will cause maintenance issues.

Applying the plan with dimensions to a piece of paper will enable you to obtain a sketch that will make creating a distributor simpler. It is evident from the drawing which materials and components will be required and in what quantities.

Production process

Please be aware that square or round pipes can be used to construct the filing and return compartments. A lot of masters favor the final choice.

They assert that working with it is simpler.

Thus, the manufacturing sequence is as follows:

For all sizes that were indicated on the sketch, it is necessary to prepare the corresponding materials. These are almost all pipes.
They are connected by the design of the drawing in accordance with the purpose of each.
The connection is made using a welding apparatus.
welding places are necessarily cleaned with an iron brush, if necessary, they are degreased.
The finished device is necessarily tested for the presence of leaks. Therefore, all the pipes will have to be closed hermetically, leaving only one. Hot water is filled into it. If none of the joints flowed, then the work is carried out at a high level.
The collector must be painted and dried.
can be installed and connected to all pipe systems with the installation of shut -off valves.

A less complicated choice

The question now is: Is purchasing a ready-made option not preferable? One "but" exists. Your heating system may not be compatible with the completed camshaft; in this case, you will need to align the heat engineering indicators in another way. For instance, by adding a second comb. Additionally, there are additional expenses and a surplus of installed installation work. Furthermore, a comb that you made yourself, taking into consideration every aspect of your home’s heating system, will precisely fit it and function sensibly.

Thus, you ought to consider the query posed at the outset of the piece: how can you create a distribution collector by hand? Assume that you spend a single day on this straightforward procedure. However, the ability to operate a welding machine and other locksmith tools is a need. It will be hard to guarantee the device’s quality without this.

Independent production

The primary distribution comb must be made of metal in order for the collector to operate for an extended period of time and with reliability. Pipes with square and round sections work well for production; this is not a fundamental difference. However, the majority of masters utilize the first because it makes future nozzle installation much simpler.

In order to self-manufacture, the following parts and equipment will be required:

  • Tubes with a diameter of 15 to 25 mm for the distribution of the coolant through the entire area of the building, that is, the branches of the highway directly. Their section depends on the parameters of the system and is selected individually.
  • The main pipe supplying to the collector. The section must correspond to all calculations – to be equal to the amount of the diameters of the tubes of all main directions.
  • From the tools you will need welding, a grinder, a drill, a building level and a roulette.
  • Ball cranes for each circuit (locking reinforcement).

The camshaft housing foundation must first be constructed in accordance with the heating collector scheme. Using a drill, holes are drilled into the case, into which incoming nozzles will be installed to divert each individual line. Subsequently, it is imperative to verify their tightness.

You must replicate the system’s operation in order to perform this type of check. The water supply is connected to the collector’s input channel in the future system, and the pipes are connected to the holes. In addition to a visual check for leaks, a manometer is connected to the system to confirm the pressure within and make any necessary adjustments.

You must gradually raise the pressure to the highest level if they are not found. Group groups can be installed in the system when nothing changes. It is preferable to use tubes with walls starting at 2 mm. The collector’s foundation needs to be painted. This will guarantee that its work will last.

Purchasing factory-made combs is advised in order to maximize collector heating for two- or three-story buildings, as homemade devices lack the performance quality and efficiency needed. Their work is marked by a high degree of accuracy and dependability.

Don’t overlook the expense of these devices, though. It will be directly influenced by the geometric size of the comb and the quantity of incoming pipes for each highway. Typically, between 7,000 and 25,000 rubles.

Installing these parts will optimize the collector-type heating system’s performance. Nevertheless, because the comb is so big, it is important to account for potential heat loss. It is advised to insulate its mineral wool in this regard.

Than a home -made better option

For a specialist, establishing the regular operation of autonomous heating in a house with more than one floor is a difficult task. To accomplish this, set up a special space and start dancing from the stove. Mounted directly behind the heating apparatus is a boiler room collector. There is pipe wiring running along the floors through it. One coolant distributor in a large house is insufficient; therefore, additional wiring within the premises is required for each floor.

Selecting tools from the store that are difficult for the jobs around the house. A do-it-yourself heating collector will make your home comfortable in the winter by matching the power of your boiler, the length of the contours, the heated area of the rooms, and the warm floor. Furthermore, if they require at least one for the floor, an independent steel pipe collector will be far less expensive than one that is purchased.

Kinds

Heating system collector groups are offered in their completed state, albeit with varying configurations and discharge counts. Selecting the appropriate collector assembly and installing it yourself or with the help of experts is an option.

Nonetheless, the majority of industrial models are general-purpose and may not always meet the requirements of a particular home. If they are modified or refined, the expenses can go up dramatically. Therefore, considering the characteristics of a particular heating system, it is generally easier to collect it from separate blocks with your hands.

Collector group for the heating system assembly

The figure depicts the layout of the universal collector group. It is made up of two blocks with the appropriate amount of coolant installed for both direct and reverse currents. Flow meters are mounted on the supply (direct) manifold, and thermal drives are positioned on the opposite side to control the temperature of the reverse water in each circuit. They will assist you in determining the necessary coolant flow speed, which will control the heating radiators’ temperature.

Air valves, a circulation pump, and a pressure gauge are all installed on the collector distribution node. With the help of brackets, the supply and reverse collectors are integrated into a single block that is fastened to the wall or cabinet. Such a block costs between 15,000 and 20,000 rubles, and its installation will be obviously inappropriate if some of the bards are not involved.

The video demonstrates how to install the completed block.

Grebanka – collector knot

Thermal drives and flow meters are the most costly components of the collector distribution unit. You can purchase a collector node, or "comb," and install the required control devices manually only where they are required to avoid paying too much for extra elements.

Brass tubes measuring ¾ or 1 inch in diameter are used for the rowing, and there are a specific number of sets with ½ inch heating pipe diameter. The bracket serves as another link between them. The reverse manifold layouts come with plugs that let you install thermal drives on all or just some of the contours.

Certain models have the ability to manually adjust the supply with the assistance of cranes. These combs feature a cast housing and a threaded fitting or nut on the ends, making it easy to quickly assemble a collector from the necessary number of layers.

You can make a collector entirely by hand or collect from individual elements to save a collector for heating systems.

The main characteristics of the collector system

The division of the flows into multiple channels that are independent of one another is the primary distinction between the collector and the conventional linear method of redistributing the heat carrier. Different equipment and dimensional rows can be used for different collector installation modifications.

The collector heating scheme is often referred to as radiation. This is because of the comb’s structural characteristics. Looking at the apparatus from above, you can see that the pipe that comes out of it looks like sunlight.

The weld collector has an extremely basic design. A comb, a round or square-sectioned pipe, is connected to the necessary number of pipes. These pipes are then connected to each of the heating circuit’s individual lines. The main pipeline is connected to the collector installation.

Additionally, controversial reinforcement is established, which allows for the adjustment of the heated fluid’s temperature and volume in each contour.

When designing heating systems, a collector group with all the required details can be bought ready-made or assembled separately, which will drastically lower the consumable estimate.

The following are some advantages of the heating system’s operation, which is dependent on the distribution collector:

  1. The centralized distribution of the hydraulic scheme and temperature indicators occurs evenly. The simplest model of the ring comb two- or four-circuit type can quite effectively balance the indicators.
  2. Regulation of the operating modes of thermagisters. The process is reproduced due to the availability of special mechanisms-meters-sprouts, a knot of the worship, shut-off-regulating reinforcement and thermostats. However, their installation requires the correct calculations.
  3. Ease of maintenance. The need for preventive or repair measures does not require disconnecting the entire heating network. Due to the sliding pipeline reinforcement mounted on each separate circuit, you can easily block the flow of coolant in the required area.

However, such a system is not without flaws. First, there is an increase in pipe consumption. The installation of the circulation pump completes the compensation of hydraulic losses. Installing it on every collector group is required. Furthermore, this solution only applies to closed-type heating systems.

Want to replace the heating system in your house without going over budget? Become an expert do-it-yourselfer by building a homemade polypropylene collector. This clever gadget acts as a central point for your heating system, distributing heat throughout your home effectively. You can build your own collector at home with basic supplies and equipment, such as polypropylene pipes, and a little bit of knowledge. Bid farewell to pricey professional installations and hello to comfortable, cost-effective heating that is customized to your needs. Building your own polypropylene collector is a rewarding project that gives you control over the comfort and energy efficiency of your home, regardless of your level of experience with do-it-yourself projects.

Design of a homemade manifold

The design process is the initial stage in making a homemade distribution collector. A well-designed project will make the work much easier and produce a high-quality, welded heating manifold that is ideal for certain operating circumstances.

Prior to gathering a heating collector, it is necessary to assess several building parameters:

  • The number of heating circuits in which the coolant must be applied;
  • The number and parameters of heating equipment (power, heating temperature, pressure, etc.P.);
  • The need and the possibility of further embedding additional elements into the heating system;
  • The number of additional elements of the system (pumps, valves, shut -off valves, etc.).

The characteristics of connecting various contours to the distribution collector are the next thing you should carefully consider:

  • Electric and gas heating boilers can be brought to the collector from above or below;
  • In the presence of a circulating pump in the heating system circuit, boilers can only be connected from the end of the collector;
  • Inserting of indirect heating and solid fuel boilers into the collector can only be carried out from the end side;
  • The supply of each heating circuit is connected to the collector from above or below.

It is worthwhile to sketch out the heating collector project on paper, or to print it out if the design was made on a computer, in order to see how to assemble one precisely and understandably. It is possible to check while working to prevent installation errors if there is a clear image that complies with the scale and the required number of elements.

The dimensions of each component of the collector must be indicated on the diagram. For instance, there should be roughly 10 to 20 centimeters between the supply and reverse pipes; any deviations from this are largely due to the device’s servicing. The back of the collector and the supply should be spaced similarly.

The collector’s primary attribute should be functionality, but it should also be reasonably small and well-designed. For this reason, you should try to increase the device’s accuracy, if it is possible to do so.

Installation of a warm floor of a warm floor

The water in the pipes should not be 45 degrees hot; a warm floor is the result of a low-temperature heating system. For comfort, the ideal temperature for the floor’s surface should be between 36 and 37 degrees. The collector installation is carried out in the same manner as for high-temperature heating if the warm floor is the only source of heat. The boiler controls the coolant’s heating intensity.

The crib circuit is altered if conventional batteries are used in conjunction with the low-temperature heating system. Installing a mixing unit is required in this situation. This portion of the contour is responsible for blending water from the return. A thermostatic valve is the central component of the mixing node. The thermostatic valve is mounted directly on the pipes, and if there is a wind floor, it is connected to the common manifold.

It is critical that the thickness of wall insulation be accurately calculated. You can find the calculator on the network.

Which ought to vary depending on the area.

The installation of a separate comb warm floor is necessary if there are numerous low-temperature heating rings, which is typically necessary. It has two pipes that connect it to the first manifold like a typical radiator. The mixing valve, which is positioned in front of the second collector, instantly controls the temperature in each and every warm floor circuit.

How to make a comb for heating with your own hands

Polypropylene is the easiest material to work with when creating a comb by hand for a heated floor. Note right away that thermostatic valves and flow meters cannot be installed in such a collector. The shut-off valves that are positioned in front of each pipe’s comb are the most reliable component.

The plan is right, but the way it was carried out is repulsive.

For production, you will require:

The goal is to join the polypropylene tees into a single line. A chopped pipe must be used for couplings. Verify that the tees on each tee belong to the same plane. Soldering polypropylene couplings with the transition to a metal thread is required right away on the nozzles. Some people install plastic ball valves in front of the coupling; however, this is not advised as you will have to redo the entire comb because you cannot remove them.

Only those contours where the length of every circulation loop is equal or nearly equal may utilize the DIY heating comb. It is not possible to adjust the hydraulic resistance because there are no holes for the installation of flow meters. One of the loops’ resistance will increase with its length. There, water simply won’t flow.



Criteria for choosing a finished design

If you don’t have the time or desire to build a camshaft on your own, you can opt to purchase a pre-made item. Although it will be far more expensive than homemade, it will help you save the several hours it would take to make a comb that is grown by hand.

Numerous factors that could impact the overall heating system’s efficiency should be taken into consideration when making a purchase.

The most important ones are as follows:

  1. Material. First you should decide on what a distribution crest will be made of. Manufacturers produce steel, polypropylene, as well as non -ferrous metal products. Each option is used for a certain type of heating system and helps to achieve maximum efficiency with minimal heat loss.
  2. Passing capacity. It depends on the magnitude of this parameter how well the comb with the functions assigned to it will cope. It is important to choose an option that will contribute to the unhindered movement of the coolant in all systems of the system.
  3. Pressure. During the purchase of the device, not only the working pressure in the system should be taken into account, but also possible differences. The device should be designed to change this indicator and continue to work with minor fluctuations.
  4. Energy consumption. For low -income people, this parameter is one of the most important. Most part of the financial costs go to pay for electricity that provides work all systems.
  5. The possibility of expansion. It is very important to provide it, since new heating devices may appear in the house, which will need to be connected to the system.

Warm floor: the use of combs

The radiator heating system and the warm floor are nearly identical. Through the pipes beneath the floor, water from the heater enters the comb and distributes the coolant.

In addition to distributing, a collector for a warm floor also returns. The collector has two compartments: one for distributing water through the contours, and the other for returning the cooled coolant.

The water enters the heater from the national section of the comb. Typically, the circulation pump is attached to the return pipe. A pump is necessary to provide continuous water circulation, which will establish the proper water movement system.

Note: Not every device is appropriate because the circulation pump needs to be built for the coolant temperature.

To create equal pressure and temperature in different areas of the heated floor, a specific number of pipes run beneath the surface from the comb. The quantity of heating contours determines the number of rowing dates. You’ll need more bages the more contours there are.

The pipe is installed uniformly around the room’s perimeter; the "snake" or "spiral" configuration is frequently chosen.

This is how a typical warm floor plan looks:

  1. Heating boiler and expansion tank.
  2. Manometer.
  3. Distributive collector.
  4. The pipes of the warm floor.
  5. Circulation pump.

We are able to guarantee continuous coolant circulation thanks to the entirety of the equipment on this list.

Water enters the heating boiler through the expansion tank and travels to the collector. The collector then distributes the water through the pipes, and the manometer shows the system pressure.

Note: Although the description appears straightforward, the installation of the system is fairly intricate. It is necessary to plan ahead and select each heating element precisely. This will determine the ultimate efficacy.

For homeowners wishing to upgrade their home’s heating system, building their own polypropylene collector for heating distribution can be a satisfying and affordable project. It’s easy to build a custom collector that meets your needs by using easily obtained materials and a few easy steps.

A crucial element of this do-it-yourself project is the distribution collector, which is sometimes referred to as a manifold or comb. This part serves as the main hub for distributing hot water throughout the house’s heating system. You can guarantee effective and uniform heat distribution throughout your home by carefully planning and constructing the collector.

There are various benefits to building the collector out of polypropylene. Polypropylene is comparatively easy to work with, long-lasting, and resistant to corrosion. In addition, compared to other materials frequently used by collectors, it is reasonably priced and easily accessible at the majority of hardware stores. A polypropylene collector can offer many years of dependable service with the right upkeep.

Paying close attention to details is essential when putting your homemade polypropylene collector together. To guarantee a good fit, take your time measuring and cutting the pipes. To safely fuse the parts together, avoid leaks, and maintain the collector’s integrity, use solvent welding techniques. To get the best results when working with polypropylene, adhere to the manufacturer’s guidelines and best practices.

For homeowners with rudimentary plumbing knowledge, building a DIY polypropylene collector can be a rewarding project overall. It gives you the satisfaction of making something by hand and the chance to enhance the effectiveness and performance of the heating system in your house. You can build a custom collector that satisfies your heating requirements and ultimately saves you money if you have the appropriate supplies, equipment, and knowledge.

Video on the topic

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