Liquid plastic from polypropylene waste. We make plastic at home. Plastic panels: features and benefits

You will need

• - container for melting plastic;
• - soldering iron or soldering station;
• - gas-burner;
• - industrial dryer;
• - welding gun.

Instruction

Before you start melting the plastic, try out a small piece of it. Not every type of plastic can be melted in ordinary ones, so it is advisable to find out during the experiment. Grab a piece of material with tongs or tweezers and bring it to an open or gas burner. The heated plastic will either slowly melt or immediately begin to burn for outdoors.

After making sure that the plastic can be melted, crush the starting material and place it in a metal container, for example, in tin can. To ensure the melting of the material, insert the container with crushed plastic into another container with big sizes. Pour water into it and put the entire structure on a fire or stove, making a kind of water bath. This method is suitable for processing plastics with a low melting point.

To melt small pieces of plastic, use a heated soldering iron tip or gas burner. If possible, use a soldering station with a built-in tip temperature control. Select the temperature required for melting, based on the experiment. Too high a temperature can ignite the material or make the plastic brittle.

Use a welding gun or blow dryer to melt plastic with increased strength. The procedure for working with a welding gun is indicated in the technical documentation for it. The kit also includes filler materials that allow welding different kinds plastics and plastic, for example, to melt the seams of the connected products.

Take precautions when processing plastic at high temperatures. It is advisable to carry out all procedures in the open air in order to avoid poisoning by combustion products. Avoid getting the melt on exposed parts of the body and clothing to prevent burns and tissue damage.

Sources:

• how to handle plastic

In the event of a breakdown of any plastic parts many try to fix them themselves. However, not everyone succeeds. Since when choosing a connection method, it is necessary to take into account the rheological properties of plastics and their type: easily weldable, difficult to weld, or those to which the fusion welding method is not applicable at all.

Instruction

You can use either a semi-professional hair dryer, with continuously adjustable temperature and flow. Additionally, you will need nozzles for welding. To do this, it is necessary to clean both sides of the weld. Select filler rods according to a fragment similar to the material. If possible, make a test welding to check the compatibility of materials, as well as to select the required temperature, speed of the hair dryer and indentation force. Preheat the hair dryer for 10 minutes to stabilize the hot air.

Fold the fragments of the part and fix it in the desired position with the help of special clamps-clothespins. Sharpen the end of the rod to make the initial welding process easier. Tilt the rod at a 45° angle while welding, or use the fast welding attachment. The use of the nozzle facilitates the welding process as it has fixed positions for both the rod and the hot air gun. In work, press the bar a little. As a result, you should get a smooth seam that rises slightly above the surface. After complete cooling, it is necessary to sand the seam and paint, if necessary.

Related article

Sources:

• melting of plastics

If you have a need to connect plastic parts together, you do not always need to glue them together. In some cases, to connect the plastic, it can be melted in the right place, and then the parts are combined. When choosing the type of joint, the type of material and its ability to be joined by such impromptu welding should be taken into account.

You will need

• - building hair dryer;
• - welding gun;
• - soldering iron (soldering station);
• - filler rod.

Instruction

Determine if the plastic is melt-weldable. Plastics can be welded easily, difficultly, or not meltable at all. You can find this out by experience. Take a piece of the test material using pliers or tweezers and heat it on an open flame. Carry out this procedure in air to avoid exposure of the respiratory tract to combustion.

If you want to melt plastic, cut it into pieces and place it in a saucepan or other container, and then heat it over a fire, making a water bath first. Pour the softened plastic into the mold or process the seams of the products to be joined with it. In this case, not only caution should be taken, but also quickly, otherwise the plastic will harden prematurely.

Use a soldering iron tip to melt the plastic. It is more convenient to use not an ordinary soldering iron, but a soldering station, which makes it possible to regulate the heating temperature of the tip. The required temperature parameters are also selected empirically on pieces of material. If careless with a soldering iron, there is a risk of spoiling the plastic surface or making the seam unnecessarily fragile.

If possible, get a special welding one that melts plastic and various types of plastics. The set also contains material samples, which are used to fuse seams and joints. The procedure for use and safety measures when handling it are set out in the instructions for the device.

For some types of plastic, you can use a hair dryer, which allows you to heat the material to the required temperature. Pre-clean the surfaces to be joined on both sides of the future seam. Select the required nozzle and filler rod. It is advisable to make a test melting of the plastic and how compatible the materials to be joined are.

Preheat the hair dryer to stabilize the temperature. Secure the parts to be joined by melting using a vise or clamps. To make the melting process go faster, sharpen the end of the filler rod. Weld the parts by melting them with a hairdryer, while lightly pressing the rod against the melted surfaces. After the melt has solidified, process the surface of the seam, giving it a smooth appearance.

Plastic bottles serve as a universal container for liquid. They have an advantage over glass containers due to its elasticity and greater volume. Plastic containers first appeared in the United States in 1970 and have since become widespread throughout the world.

Plastic products have become an integral part of our lives, so today the topic of plastic recycling at home has become of particular importance. Recycling of plastics, even in own house, contributes to the protection environment from huge piles of almost non-degradable plastic waste.

The basis of all plastics is polymers (compounds having a high molecular weight and consisting of monomers). The possibility of recycling plastics depends on the type of raw material from which the plastic product is made. Today, there are many types of plastic, which, however, can be combined into two large groups:

1. Thermoplastic. Approximately 80% of plastic products are made from this material. Includes types: HDPE, LDPE, PET, PP, PS, PVC, etc.
2. Thermoset plastic. Represented by polyurethane, epoxy, phenolic resins, etc.

It is impossible to recycle type 2 plastics at home, because. thermosetting plastic is not remeltable (in some cases, in enterprises it is crushed and used as a filler). Thermoplastics, on the other hand, melt when heated without losing their initial properties and, when cooled, regain their original shape. That is why "at home" it is possible to process only thermoplastic plastics using special, but "simple" equipment and obtain new useful products and materials from such plastic waste.

The most common recycled raw materials are PET bottles and other plastic containers.

Helpful information! To understand what type of plastic the product is made of, you need to pay attention to the markings on its surface (often at the bottom). It has the shape of a triangle, inside which there is a number corresponding to the type of polymer. Also under the triangle put letter designation types of plastic.

What you need for recycling at home

Industrial machines that process plastic are expensive and require large areas. Of course, such units are not suitable for implementing the idea of ​​\u200b\u200brecycling plastic waste at home. To get new products from waste plastic in a handicraft way, you will need to independently design several special machines.

Following Precious Plastic Project

To process plastic with your own hands, you will need the following devices (or one of them, depending on the goal):

1. Schroeder. Shreds plastic waste to obtain crumbs of a given size, which is then further processed. The device includes several main components: a grinding part, a loading funnel, a frame and a power source. The most time-consuming stage in the manufacture of the device is the production of a grinding element consisting of a shaft with blades "strung" on it. The hopper is made from sheet metal(Here, waste can also be used, for example, old car parts). Right size the resulting plastic fraction is set using a grid installed under the grinding part.
2. Compression device (press). The plastic chips loaded into the apparatus are subjected to high pressure and high temperature, the result of the process is the production of new pressed plastic products of various shapes. The main elements of the device: furnace, frame, press and electronics.
3. Injector ("injector"). Principle of operation this device is that under the influence high temperature the plastic crumb is melted into a fluid mass, which is then injected into a mold. After the plastic mass cools, new solid objects of small dimensions are obtained.
4. extruder. The heated plastic mass is pressed through the channel of the device, as a result of the process, the plastic exits the device in the form of threads. With the help of an extruder, plastic granules can be obtained.

Blueprints for assembling all of these devices can be downloaded for free from preciousplastic.com. There you can also watch video instructions in which they clearly and easily talk about the technologies for creating devices, necessary materials and sequence of actions.

The Precious Plastic project is international. Its creator, Dave Hakkens, improved the drawings of polymer recycling devices found on the Internet and, using his knowledge, designed efficient devices that make it easy to obtain new products from plastic waste. The project helps common man create machines that recycle plastic, and use them to benefit not only for themselves, but also for the environment.

Simple mechanism for cutting plastic bottles

The essence of this cutter is that it cuts off from the edge plastic bottle(along its circumference) threads having certain thickness. The result is achieved thanks to a fixed blade sliding on a plastic product. The process does not require electrical energy, the device consists only of a holder and a cutter itself. From plastic threads obtained with your own hands, you can create various interior items, baskets and other objects for which a person has enough imagination.

A few words about safety

Recycling plastic at home does not require supernatural safety knowledge. When melting plastic, it is worth arming yourself with fireproof gloves (you can use welding gaiters) to avoid burns. Also, when working with plastic products, it is important to know that they cannot be incinerated, because. Some types of plastics, when burned, release toxic compounds into the environment. Of course, it is better if the crushing of plastic waste, their melting, etc. will take place in a specially designated place, for example, in a garage.

Do not forget about safety during the manufacture of devices for the processing of plastic raw materials. It is also necessary to use personal protective equipment here: special glasses, a mask (welding), canvas or leather gloves, etc.

How to melt plastic waste at home

You can melt plastic waste at home using one of the devices described earlier (press, injector, extruder). However, their creation requires certain skills and time. You can resort to melting plastic using more primitive methods. For example, to obtain a plastic screw lamb, a metal syringe and a solid mold can be constructed.

Process description

Polypropylene (marking "PP") can be used as a raw material. The crushed material is put into the manufactured syringe and compacted with a metal piston. The syringe filled with plastic is placed in a conventional oven for about 30 minutes at a temperature of 220-240°C. Then the molten plastic mass is squeezed out of the syringe into the prepared mold, while for some time it is necessary to hold the material under pressure. After cooling, the finished product can be removed from the mold.

Video of plastic recycling at home

Craftsmen produce from waste plastic the most miscellaneous products. For information on how plastic injection can be carried out at home with a screw lamb, see this video:

Melt a few plastic caps from bottles you can use a building hair dryer. The process of molding useful small plastic products is presented in the following video:

Benefit

The main benefit of independent plastic recycling is that new products are obtained from unnecessary and cheap materials that are widely used in everyday life and other areas of our life. By building special equipment, you can organize a small business based on the manufacture and sale of materials for further processing (for example, flex) or ready-to-eat items ( plastic tableware, wicker furniture, etc.).

Industrial recycling of plastic is associated with solving many problems. Recycling plastic waste at home is much easier. It is only important to set a goal for yourself and decide on the direction of processing. And it is possible to design plastic processing devices of any complexity with the help of the "omniscient" Internet.

Recycling plastic bottles as a business at home, do-it-yourself equipment is of interest to many due to the availability of raw materials. You can only use material that has the appropriate symbol. This is an image of a triangle made up of three arrows. Inside the triangle, the marking of the specific plastic from which the product is made is placed. For recycling, only such plastic is selected, which, when heated, does not emit harmful substances to health.

In some cases, when stripes are made from plastic bottles for the subsequent production of wicker products, bottles from any type of plastic can be used.

An interesting recyclable material is bottles made from HDPE, a high-density polyethylene. Plastic is made from petroleum products, it is easily chipped, resistant to alkalis and acids. The scope of manufacturing from such material is very extensive. Tanks for storing motor oils, water, bearings, and various handles were created from it.

Plastics with a different label should not be used for recycling at home - when melted, they can release harmful substances or just ruin the composition.

General principles for recycling plastic containers at home

Plastic becomes plastic at a temperature of 180 ° C, so it can be used for recycling at home. Previously, the plastic is crushed, and then the resulting mass is heated. It is sometimes advised to heat the plastic at home, as it is sometimes advised - in the oven, it is impossible to reach the state of such a liquid, it simply becomes plastic, therefore any product can be easily formed from the heated mass of crushed plastic in the appropriate form, but there will be cavities in the craft.

Modern equipment for small business

Russian-language sites traditionally describe the processes of processing plastic bottles on domestic equipment, which requires more than two hundred square meters to accommodate and about six hundred thousand rubles to purchase. Along with this, today there are a lot of equipment, small in size and very cheap in terms of production cost, for processing plastic bottles at home.

Such equipment does not require a lot of space for placement, it is easy to rebuild it to change the products produced, to do it yourself. Naturally, it will not make it possible to earn millions every month, but it will make a start-up for the processing of plastic raw materials accessible to almost everyone and will serve as the foundation for the further development of such a business.

A complete plastic bottle recycling line includes:

• shredder;
• agglomerator;
• extruder.

Such a set of units will ensure the complete processing of plastic bottles.

shredder

This unit is designed for grinding plastic products. The resulting small plates of plastic are called flex. Industrially manufactured devices are quite expensive.

For example, the simplest AMD-200D crusher, which processes about fifty kilograms of feedstock per hour, will cost about one hundred and thirty-five thousand rubles. And to make such a unit with your own hands will not be much work.

Those interested will benefit from drawings:

If conditions permit and it is possible to place a bath for washing the resulting flex, a centrifuge for drying in the room, it can be limited to its production. Today, according to Flagma, such material is sold from thirty-five to forty-nine rubles per kilogram, and bought - from twenty to thirty-five rubles per kilogram.

Agglomerator

This unit is intended for sintering flex. The cost of the cheapest industrial designs is about two hundred thousand rubles. Therefore, it is not surprising that craftsmen make such units on their own. Of course, it is impossible to make such a unit from scratch without milling and turning. However, you can use the drawing and ask friends working at the factory to make the necessary parts.

Many organizers of the recycling of plastic bottles in garages and other utility rooms Existing electric furnaces are used as the working chamber of the agglomerator outside the attention of government agencies that monitor compliance with sanitary environmental standards, since the flex begins to sinter at temperatures ranging from 180˚C. Dave Hackens' agglomerators are the most popular.

extruder

This unit is a device for receiving finished products or pellets used later for processing. The screws feed the flakes into the chamber, where they are heated and become plastic, up to liquefaction. Passing through the filter, the plastic is cleaned and, after passing through the extruder, it takes the form of threads. These threads can be used for various products, but you can cut and sell.

Dave Hackens Suggests homemade extruders, which are combined with a press and allow you to get any product that matches the shape. In the unit, the flex is heated to an almost liquid state and is fed into the mold by screws under pressure.

What can be made from PET bottles

For people with creative imagination, plastic bottles are an inexhaustible material for inspiration.

You can also make from plastic bottles strong ropes. To do this, you need a "bottle cutter". Craftsmen make this simple device from a blade, a few washers, mounted on a wooden base.

When assembled, the bottle cutter looks like this.

Spools that are wound with threads obtained from PET bottles can also be made from bottle necks. First, cut off the necks of two bottles and the tops of two caps. Cropped caps are fixed on the rod, on which the cut necks are then wound, holes are made in the necks with a red-hot carnation, through which the beginning of the thread is passed and, after tying a knot, it is fixed.

The resulting tapes can be used not only for the manufacture of ropes, but also to make tubes from them. To do this, a strip cut from a plastic bottle is passed through a hole of the diameter required for the tube and heated, they begin to be pulled through it. The principle of operation is clear from the photo.

It is quite possible that such a mini-business is suitable for someone, requiring only a bottle cutter with coils and premises, such as making brooms and brooms from plastic tapes. How such products are made can be easily understood from the picture.

It may seem to many that the bottle ribbon business is very small, not noteworthy. However, in India it is a serious business. Several vertically placed bottle cutters are used, the cut strips are wound on reels that rotate from a mechanical drive. One worker sets the bottles on the bottle cutters and ties the resulting strips, the second worker controls the speed of rotation of the coils, on which the strips are wound, from which ropes are subsequently made.

IN Lately in southern countries, tiles made from PET bottles are becoming more and more popular. The molten flex is mixed with mineral filler (sand fines) and filled into molds through an extruder. In the countries of the former USSR, such a business is just beginning, so the field for the activities of craftsmen is quite wide.

Also made from plastic bottles paving slabs, chain-link mesh, greenhouse walls and much, much more.

But, so that an entrepreneur does not decide to make such recycled materials - success, as in any business, will depend on the literacy of drawing up a business plan. Such a document will not only streamline knowledge, build a system of actions, but can be useful if you need to attract investment money.

Principles of writing a business plan

Like any other business plan for the organization and operation of an enterprise aimed at processing plastic bottles, other plastic products are drawn up in accordance with the requirements for such documents by the considering specialists. This must be taken into account, because the business plan is prepared not so much for oneself, but for those who, on its basis, will allocate the money needed to turn the idea into practice. Financial professionals are the most picky. If they themselves do not know something thoroughly, they will definitely turn to specialists to obtain an assessment of the proposed document. Therefore, the created document should correspond to the accepted standards as much as possible, since, as they say, people are met by clothes.

Before writing, you need to clearly understand for yourself that a business plan, in fact, is just a written explanation of the proposed project, the amounts needed to implement it, and also optimal timing implementation. Such an approach to the matter will immediately clarify what is the main thing in it and what is secondary, what needs to be emphasized, and what should be moved to the background.

Information about the project of the future enterprise is divided into several sections:

• Section I Title page. Preamble information about the name of the enterprise, its form of ownership and address is placed here, the name of the proposed project is placed, telephone numbers and e-mail addresses are placed. The date of preparation of the document is indicated and information is provided on the need to calculate cash costs and profits, which are included in the document or placed in a separate application.
• Section II. This copyright section is often referred to as the "Privacy Statement". It sets out data on the authors of the business plan materials and their rights, obligations not to disclose the information received without the author's consent, as well as obligations to return the business plan after reading it if the decision on it is not positive.
• Section III. This section is often referred to as the "Summary". This section summarizes the entire business plan and outlines the essence of the project. This section is recommended to be created after writing the entire business plan and arrange the information following the following structure:

1. project description;
2. availability of resources;
3. ways and means of implementation;
4. the answer to the question - what is the uniqueness of the project;
5. required investment amount;
6. projected profit;
7. ways to return money to investors;
8. the effectiveness of the proposed project.

• Section IV. Objective of the project. This section describes the intended purpose of the proposed business, describes the services or goods supplied to the market, and indicates the benefits that customers will receive. For this, the advantages of the products produced are described in detail. If there is their uniqueness - this moment should be written as carefully and extensively as possible. If used Newest technologies- you need to specify how copyright will be implemented.
• Section V Market analysis in the area of ​​the proposed business. Here the results of marketing research on the proposed products are presented, as well as the activities of competitors are analyzed. If, when writing a business plan, there is no uniqueness of the proposed business in a given region, the emphasis is on reducing costs through the use of new technologies, reducing energy costs, personnel, and so on. Be sure to take into account that today there are practically no areas that are no longer covered by business, therefore, having found competitors, you need to justify how the proposed business is more attractive.
• Section VI. Position of the created enterprise in the industry. Here the main characteristics of the enterprise are described and, based on their analysis, the place of the planned production or trade in the existing industry is noted. The preferred form of ownership of the enterprise and what costs will have to be incurred to create it are indicated. The section also contains information about:

1. company address;
2. the type of premises required, indicating whether it already exists or needs to be purchased, whether it is necessary to make repairs or not;
3. economic indicators of work;
4. temporal characteristics of the specifics of production activities.

If the business is planned to start from scratch, the prospective management has or does not have experience in this area. The lack of managerial experience in the proposed area is a very negative characteristic, as a rule, it initiates the refusal of third-party investors.

• Section VII. Product Description. The section is created after the analysis of the existing market. Based on the analysis, a conclusion is made about the advantages of the proposed product and the competitiveness of the company. This section must contain or be accompanied by product samples or their photos, a description of technical characteristics. If several units of the product are produced, each of them is described in detail. Structurally, the section is divided into several subsections:

1. the name of the product, as well as its description;
2. purpose and areas of use;
3. specifications
4. competitive advantages;
5. the presence or absence of copyright;
6. environmental friendliness of the product or its absence;
7. quality certificates;
8. service and operation.

• Section VIII. Sales of products. The section contains a marketing plan for the implementation of the manufactured product. Such a plan should include:

1. models of behavior in the market;
2. a reasoned explanation of the quantity of the purchased product by customers;
3. describes the methods used to influence demand;
4. describes the methodology for calculating prices;
5. provides information on how to sell;
6. the legal status of the main consumer is indicated.

Any material on organizing a business includes a governing advice - find a consumer. That's what the marketing plan is for. This structural unit is under close scrutiny, so it must be specified in detail:

1. what criteria for evaluating the product from the point of view of the consumer were studied when writing a business plan;
2. what place in the supply chain is occupied by the customer to whom the goods are supplied.

This section is based on the characteristics by which the product is evaluated not by the manufacturer, but by the consumer. It is highly desirable to analyze the evaluation of a similar product by consumers of competitors and, on the basis of this information, justify the attractiveness of your own product. This section also includes the logistics concept - how and to whom the goods are delivered, who is responsible for sending them. A strategy for conducting advertising campaigns is given. Prices and sales volumes are indicated by time periods. Payback periods and profitability are calculated.

• Section IX. Production plan. The material of the section requires close attention and elaboration, especially in cases of planning to open a company from scratch. The section describes and analyzes in detail the production chains of the product, considers the premises and the equipment located in it, its location, ways of transporting the source material, parts, finished products and so on. Not only an exhaustive description of production is given, but also the control over its processes, it is indicated what moments will be entrusted to subcontractors, the reasons for their choice are indicated. This section describes all the costs of production, and also calculates the cost of the product, provides an estimate of costs, indicates variable and fixed costs. Information is arranged following a specific structure:

1. production structure;
2. technology used;
3. what premises are needed;
4. the need for staff;
5. raw materials;
6. equipment characteristics;
7. production capacity;
8. cost estimate;
9. selection of subcontractors;
10. cost analysis.

• Section X. Organizational plan. The section describes organizational issues, lays out regulatory documents and describes how they will be implemented.
• Section XI. Financial planning. Here you can find information about the required financial investments and their spending. It also sets out the timing of financial movements, the timing of the stages, finances for working capital are determined. It also indicates if there is a need to attract loans and how they will be returned. In this section, the conclusion of the above is an analysis of the effectiveness of the company and its work. Structurally, it looks like this:

1. received profit;
2. tax payment structures;
3. the need for investment;
4. loan service;
5. description of the effectiveness of the project

• Section XII. Risk analysis. The section contains information about the difficulties that may impede the implementation of the project. This includes difficulties provoked by legislation, weather, competitors, and so on. The more complete the list, indicating ways to solve difficulties, the higher the assessment of the plan as a whole.

The difficulties of doing business include the wrong choice of employees - success does not depend on the degree of acquaintance, but on professionalism.

To assess the degree of risk, the following methods of analysis are used:

1. statistical method (the basis is the study of named statistics);
2. analogy method - analysis based on studying the development of similar projects;
3. expert method, the basis of the analysis is expert opinion;
4. modeling - the response to external influence is analyzed.

There is also a description possible systems counteraction to risks, are called possible guarantees - authorities, product guarantees, bank guarantees and so on.

• Section XIII. Applications. Documents that are not included in the planning description but are important are collected here, copies of contracts for similar products, data sources, price lists, and so on.

Pavel Cherepnin talked about such a cool thing as a thermoforming box. It allows you to melt plastic at home, make plastic waste from any waste, such as a canister or a plastic bottle, various details and shapes at home.

You can use specialized plastic, such as ABS plastic or polycarbonate. The forms are strong, for example, I made a mask from a canister. And the bottle detergent. Let's try to mold a “smiley” out of it. It turns out also pretty cool, you can use and make a lamp, a helmet iron man. Let's make it out of cement. Let's try. Perfectly molded, excellent models are obtained in the home workshop. You can do whatever your imagination allows.

Safety attention!

Please note that the wizard is working in violation of safety regulations. Do not deviate from the rules of TB, take care of your health when melting hot plastic!

Making the box body

First you need to make the body of the box. Of course, you can take ready-made, for example, from old furniture. But certain dimensions were required for the manufacture of masks, parts for cars, we had to do it from scratch.

Used old boards. I found in the garden, along the street, literally rubbish and garbage that is lying around and no one needs it. I had to cut, remove all unnecessary parts, protruding ends, bumps, so that the boards were even and of the same height and width. The size was made according to the face, a cast of cement was taken and a box was made on it. It is necessary to make masks. Therefore, I focused on the largest sizes that may be required. I sawed everything circular saw, permissible with a jigsaw, but it is much more convenient and faster to work with a saw. Got a frame. A groove had to be made along the top of each board, it needs to be placed with a grate. Grille for conducting air into the box. A vacuum cleaner is connected to the box itself, and creates a vacuum or, more simply, a vacuum inside the box, and attracts plastic. I made cuts along the edges of each board from the ends, smeared it with glue using glue gun and all the details stuck to each other. Got a box. Then I fixed all the corners with self-tapping screws. After fixing it turned out to be strong, screws and glue hold it just tightly. You have to make the bottom.

Found chipboard from furniture. Let's draw the bottom. Let's cut off the excess. Chipboard is difficult to cut - a dense material. The box for melting and shaping the plastic is ready.

Making a lattice

I took what was in the garden, you can take any lattice. We will cut everything to size so that there is nothing superfluous, according to the internal grooves that we made in advance. Well, the grille fits perfectly, but so far it is not fixed by anything, so I will fasten it with the same self-tapping screws. Four is enough. You don’t need special strength, and in the future you don’t need to remove the grate, you don’t need to make a super mount. Great. Everything is attached. You can move on to the next step. You need to make a frame for the plastic on top. There is a perfect piece of chipboard, just cut it in half and the frame is ready.

About casting and molding of plastic parts from 5 minutes.