Casting abs plastic at home. Plastic molding at home: the creation of an injection mold, the manufacture of a part. How is the casting process

Plastic is a universal material. It has found wide application in the manufacture of various components and parts in both industrial and household appliances. Products from it are used in the design of interiors of residential premises and offices.

A variety of material, called liquid plastic, allows you to create a wide variety of shapes and sizes of crafts. This makes it possible to implement original design solutions. How to make liquid plastic at home?

Materials for manufacturing

To make liquid plastic with your own hands, you need to prepare the following:

• glass or metal container;
• acetone;
• Styrofoam.

In this case, the amount of acetone used depends on the desired volume of the finished product.

If you want to make liquid plastic with your own hands, the recipe for its preparation will be based on dissolving foam in acetone. To do this, use It is a packaging container for various household and electronic equipment.

How to make liquid plastic with your own hands

step by step recipe the preparation of the named material looks like this:

1. Open the container with acetone and pour the liquid into the glass container so that its level from the bottom is approximately 1 cm.
2. Polystyrene foam must be broken into many small pieces, each of which will be easily placed under the thickness of the solvent.
3. Do-it-yourself liquid plastic can be made by dropping each piece into a container and waiting for it to completely dissolve.
4. Styrofoam should be added to the container until it stops melting. Then you need to wait 5-10 minutes for the unused acetone to evaporate.
5. After that, a viscous mass is formed at the bottom of the container, which can be used to produce a variety of products.

Knowing how to make liquid plastic, remember that the complete hardening of the mass lasts 20-30 hours. Therefore, the manufactured part cannot be removed from the mold during this period of time.

The substance should be applied with a small rubber spatula. The movements must be smooth. Liquid plastic must be stretched on the surface to be treated. If it is used to fill gaps, it is better to use brushes with a hard bristle in the work. They need to "push" the mixture into the gaps. After the plastic has hardened, it is recommended to apply another layer of the substance.

The described tool has long been sold ready-made. It only needs to be heated in a water bath or in special equipment. Also, a building hair dryer is often used for this.

As a rule, liquid plastic is produced in dense packages. Its terms and conditions of storage are strict. The temperature in the room where it is located should not fall below 15 degrees. Otherwise, the tool will lose performance:

• viscosity;
• elasticity;
• hardness after hardening;
• practicality;
• durability.

The cost of liquid plastic is quite high. That is why it is better to do it yourself.

Precautionary measures

Acetone is a very dangerous liquid that has an extremely negative effect on the human body. Therefore, do-it-yourself liquid plastic is allowed to be made only with strict observance of the following precautions:

1. Before working with acetone, you must carefully study the instructions for its use. It is listed on the container label.
2. Special sealed goggles should be used. They will protect your eyes in case of drops and fumes of liquid. Working without them can cause serious eye injury.
3. Acetone is toxic and should only be used in a well ventilated area. In this case, it is necessary to use respiratory protection equipment.
4. It is highly flammable. Therefore, do-it-yourself liquid plastic is made away from sources of open fire. Smoking is strictly prohibited during work.
5. Residues of acetone must not be drained into the sewerage system.
6. At the end of the process, as well as after pouring the finished plastic into molds, you must thoroughly wash your hands.

Applications of liquid plastic in decoration

For decoration, the product has been used for a long time. After its application, an elastic film appears on the treated surface. It is highly waterproof and UV resistant. The material protected by such a film is not afraid of exposure to aggressive detergents. The smooth surface has a pleasant sheen and retains its characteristics for many years.

Liquid plastic in window works

Most of the newly installed plastic windows in the connection area have gaps. To exclude such a phenomenon, all parts of the window structure that are interconnected are treated with the described substance. After drying, it creates an elastic sealed film on the surface. Do-it-yourself application of liquid plastic on windows is possible after making the material according to the above method.

Means in anti-corrosion treatment

Liquid plastic is also characterized by a high degree of adhesion to the treated metal surface. This property of the substance began to be used in the anti-corrosion treatment of steel. Liquid plastic is applied to the surface without prior priming. It dries out after a few hours. After that, a film is formed on the surface, which will protect the material from rust.

Welcome dear visitors of the site Video Teacher. In this post, we wanted to present you with a video tutorial on how to make plastic at home.

Make plastic at home

How to make some form out of plastic if you don't have a 3D printer handy? With the help of this video, you will learn how to make lightweight and amazingly durable plastic at home.

Materials you will need for this project:

1. Acetone (Used as a solvent, such as for varnishes and paints. You can buy it at almost any hardware or hardware store).
2. Glass or metal container (A small jar or some kind of metal shape is fine.)
3. Polystyrene foam (Household appliances and electronics are packed in foam plastic. I think you will have no problems finding foam plastic).

Open the bottle and pour the acetone into the container. One centimeter from the bottom is enough for a small piece of plastic. If this is not enough, you can always add a little more later. Break the styrofoam into small pieces that can easily fit in the container. Take one piece and lower it into a container - the foam will immediately begin to melt, under the action of acetone.

Continue adding styrofoam until it no longer melts, then wait 5-10 minutes for some of the acetone to evaporate. After that, you can take the plastic in your hands and make some form. The plastic will completely harden in 20-30 hours. The final product is quite hard and can be processed to give a more finished shape.

By the way, acetone is quite dangerous, so read the instructions before using. Take care of eye protection. Acetone evaporates very quickly and can cause serious injury to your eyesight. In no case should you inhale acetone vapors, let alone drink it. In addition, this project must be done away from any source of fire and in well-ventilated areas, or outdoors. Be sure to wash your hands with soap and water after touching hardened plastic. Another very important detail is that acetone cannot be poured into the sewer, otherwise nothing will remain from plastic pipes, as well as from foam.

So, the next time you need to make something out of plastic, you will already know how to do it right! If you liked this video, don't forget to like and tell your friends on social networks and join our social groups.

Plastics are currently the most common in our daily lives. Various elements of cars, buildings, household appliances, as well as furniture, utensils and much more are made of plastic. Often, home craftsmen use plastic at home as a starting material in order to make various useful items.

All plastics that are used to make household products are divided into two groups: thermoplastic and thermoset.

Thermosetting plastics are characterized by maximum hardness and minimum ductility, which allows them not to melt or soften when heated.

If thermoplastics are heated to a certain temperature, they will melt, but if the temperatures decrease, they will become solid again. This property of thermoplastics makes it possible to mold plastics at home and make parts.

What is the composition of plastics? How is plastic made at home?

Homemade plastic can be prepared in the following way. It is necessary to thoroughly mix small sawdust and magnesite in a ratio of 2: 1, pour the mixture with a solution of 0.1% magnesium chloride and stir so as to obtain a pasty state. In order to obtain parts from such plastic, the main method is used - molding plastics at home into molds. When solidified, the plastic will acquire a fairly high strength with good machinability, i.e. it is not difficult to drill, saw, process with an abrasive tool or file.

You can make plastic in a different way. It is necessary to mix small wood sawdust with ground talc in a ratio of 5: 2 and pour it with wood glue prepared in advance. The glue should have the consistency of thick sour cream. The resulting mixture must be stirred so as to obtain a pasty state. It would be reasonable to introduce into the mixture 1/2 mass part of aluminum potassium or aluminum alum, which provides protection from mold and natural drying oil, which provides an increase in plasticity. Plastic can be dyed if desired. To do this, add an aniline dye of the desired color to the plastics. For the manufacture of parts, a method is used - molding plastics at home into molds. To increase the strength of the plastic, thickened nitro-paint or nitro-lacquer is poured into the mixture at the time of manufacture instead of glue. Parts are also made by casting.

Good characteristics have plastic, which is prepared from the following components: paper dry mass / dry wood glue / finely ground chalk / glycerin / ethyl alcohol / dry ocher, which are mixed in accordance with mass parts 5/28/60/2.5/3, 5/1.

It is necessary to crush the dry paper mass strongly and pour it diluted. During dilution, glycerin, chalk, ocher and alcohol should be gradually introduced, without ceasing to mix the mixture. Parts from this mixture are also used in plastic injection molding at home. The product is colored if added to the mixture

Phenol-formaldehyde plastic is also easy to make at home. It is necessary to take crystalline (phenol) hydroxybenzene or analogues and an aqueous solution of 40% formalin. Concentrated carbolic acid is quite capable of replacing phenol. It is necessary to mix crystalline phenol (20g) with formalin (30g) by adding concentrated hydrochloric acid (30 drops). Instead of phenol, carbolic acid (40 ml) can be used. The mixture should spontaneously heat up and boil, and the consistency will become glassy and viscous. The resulting mass must be poured into the mold for 30 minutes, after which the mixture in the mold is immersed in boiling water for 10-15 minutes. Then you can take the product out of the mold. The resin obtained in this way is a thermosetting plastic with a reddish color, which is hard and strong. From it, it is allowed to manufacture parts that are supposed to be subjected to significant loads.

This video tutorial from the OchumeletsTV channel is about how to carry out plastic injection molding at home. Molten plastic is not completely liquid. This is a thick mass, so it is poured under pressure. To create it, the master made a metal syringe. Used a plumbing fixture. Piston. Guide.

Solid mold. From epoxy resin. Make a screw lamb. Polypropylene was used as raw material. From an old box. At home, it is better to pour polypropylene and polyethylene, as these plastics are non-toxic.

When heated, they do not emit harmful products. Small pieces are filled into a syringe. We put it in the oven 220-240 degrees. The part is simple, so the plastic should not be overheated much. While the plastic is heating, we will assemble the mold.

First, fix the bolt to the desired distance. It is enough to pull with your hands, no wrench is needed here. The pressure is not so high. To prevent the bolts from going back and forth, we use a cap. Chipboard material. Install the cover and tighten with nuts. We will fill the hole with plastic.

30 minutes have passed. We put on special gloves, we get a syringe. We spin quickly. Press down to extrude the plastic. Mounted on top of the mold. We press. We hold out for a certain amount of time. It must be kept under pressure so that shrinkage is minimal.
Let's analyze the form and see what the product turned out to be.

It looks like it's all gone. Extract. The detail is done. The bolt is well filled, sits firmly. The protrusions can be cut off. So you can do the casting of polypropylene, etc. at home. This is the most primitive artisanal way. So that you can quickly and easily cast the product.

Mold making

Next, watch a video on how to make a mold to pour plastic.

Polypropylene injection molding machine

The author of the OumeletsTV channel showed a do-it-yourself machine for home use. He is electric. Manual piston. Thermostat for precise temperature control. The video shows his test. For these purposes, he will cast nylon or polyamide. There is another name - kapron. Nylon is usually used to make crosses for chairs. Just such a one was found by the master, he crumbled it. Before use, the mug must be dried at a temperature of up to 100 degrees. This should be done within 2-4 hours.

Load the pellets into the machine. Let's set it to 250 degrees. This is the optimal temperature for casting polyamide. Let's wait until the necessary degrees are typed. Then install the piston. The machine has reached the optimal mode, the indicator light is on. Now you need to wait 5 minutes for the plastic to completely warm up from the inside.

The polyamide is hot. We put it on the mold. We press. We do exposure under pressure. It can be seen that he was flooded. Let's let it cool down a bit. Now let's disassemble the mold. Studied plastic product. As you can see, there is no shrinkage.

plastic injection molding machine at home

Below is a video explaining how to make a plastic injection molding machine. What is required for this at home artisanal conditions? Piston rod. Three-quarter pipe as a cylinder. Half inch adapter for 3/4 pipe. Fitting cut for convenience. Metal gasket with mica for insulation. Thermostat. It regulates the temperature up to 350 degrees. Ten 600 watts. Two nuts and a box for mounting the thermostat. We put on an adapter. Spin the puck.
To keep the nichrome from sliding down.

We begin to assemble the control unit. Then we attach the thermocouple from the thermostat to the cylinder body. The author did not begin to show how he would collect all this, but presented a diagram. The photo shows the device assembled.

We attach the control unit to the syringe. Tighten with nuts. Thermocouples are long enough. Now you need to fix. Mica to prevent thermocouple overshoot through ceramic insulators. For rewinding, not just a thread is used, but silica. It is heat-resistant, that is, it does not burn, does not melt. You can use asbestos cord. But since the master did not have it, he had to buy silica.

We wrap with a heating element. Further, you can use mineral wool or asbestos cloth. Necessary to avoid heat loss. The master used mineral wool from an old oven. Fixed with aluminum wire. Assembly completed. Can be pressure tested.

Set the thermostat to 100 degrees. Let's see how the machine will work in this mode at home.

You have probably met many times on the Internet various crafts from the so-called BISCUIT. These are toys, various decorations, flowers ... A lot of products can be made from this material.
What is it? The word BISCUIT can be translated as BISCUIT. But this is not quite the correct translation. This is not a culinary biscuit mix, although some of the ingredients are really culinary, and the result is a plastic mass, like a dough. In this case, all these products are made of plastic mass- differently, we call it PLASTIC. It is also called "cold porcelain". Just in the air, a product made of such a plastic mass hardens very quickly, hardens and becomes very durable, like porcelain. This mass is very plastic, it is easy to sculpt various products from it.

Plastic should not be confused with plasticine! These are completely different things. Plastic hardens in air, plasticine does not.

You can buy ready-made plastic in stationery stores. It is, by the way, not so cheap. Yes, and the colors are, far from what we would like. Therefore, there were recipes for preparing such a plastic mass at home from ingredients that are quite simple to buy. But you must very carefully observe the proportions and take those components that are listed - do everything strictly according to the recipe.

I will give an example of one recipe that I found on the Internet and which has photos of the stages of work, which simplifies the work. The accompanying text was in a foreign language, so I had to translate it and supplement it with my own comments.

• 1 cup (250 gr.) white PVA glue,
• 1 cup (250 gr.) cornstarch,
• 1 tablespoon of vaseline
• 2 tablespoons lemon juice,
• 1 tablespoon hand cream (non-greasy and silicone-free).

• Mixing bowl - glass refractory,
• plastic spatula,
• Substrate for rolling mass,
• Mixing spoon,
• A piece of plastic wrap.

1. Pour into a fireproof bowl

Pour in

and add

Mix everything very thoroughly with a spoon.

2. Then add

(or like, as in the photo) and stir everything until a plastic homogeneous mass is obtained.

3. Put the bowl in the microwave for 1 minute - maximum power. Stir well after the first 30 seconds. Hold for a second 30 seconds and remove from the microwave.

4. Spread the hand cream on the surface, on which you will then spread the mass from the bowl.

5. Take a bowl of mass.

(it formed there) and throw it away. We only need plastic mass.

6. The rest of the mass fell out onto a table smeared with cream.

7. Now we knead the mass, as usual knead the dough. Using a spatula, scrape everything from the surface. Knead vigorously for 5 minutes until soft and pliable.

8. At the end, we give the dough the shape of a thick sausage. We put the sausage on the fabric - it should enter the excess moisture.

9. When the dough is completely cool, wrap it in plastic wrap. The plastic mass is ready to go.

For coloring you can use:

Do not put a lot of paint at once, it is better to add it in portions, gradually, mixing. Each portion of colored plastic should be kept separately wrapped in a plastic bag - they should all be placed in a plastic container with a tight lid - kept in the refrigerator.

1. If you are using a small piece of plastic in your work, cut it off from the main briquette. Put the briquette back in the refrigerator. Cut off a piece, either use immediately to work, or put in a glass jar and close the lid until you use it. In the air, the mass dries quickly.
2. It is better to work with plastic on a special plastic substrate, to which it will not stick.
3. Tools and the substrate must be constantly cleaned so that crumbs or pieces of mass do not fall on the product.
4. If you need to glue some parts of the product, you can do this with PVA glue.

When working with plastic, you may need the tools shown in the photo: various plastic stacks, molds, a rolling pin for rolling out the mass, a ruler, caps from ordinary pens, an ice cream stick, a lollipop stick, etc. It all depends on the product you are making and your imagination.

And what cars for the baby can be made! For vehicle inspiration, check out the catalog website

Source: http://present-cama.livejournal.com/tag/Recipe%20manufacturing%20%22plastics%22%20in%20homemade

Potato starch it is a traditional food product in our country and in other European countries.
Potato starch is distinguished by the fact that it forms viscous, transparent pastes that are unstable during storage, mixing and thermal exposure.
It is used both in everyday life for the preparation of kissels, and in the food industry in the production of boiled sausages, sausages and sausages, for thickening soups and gravies, stabilizing creams.
For technical purposes, potato starch is used after preliminary modification in the paper and textile industries, as well as for the manufacture of glue.

Corn starch- the cheapest and most affordable product is widely used in all countries of the world, especially in the USA.
The pastes of this starch are characterized by relatively low viscosity, low transparency, stability of properties during storage, mixing and thermal exposure.
After cooking, they retain the smell and specific flavor of the grain.
When cooled, concentrated pastes form a strong gel.
Corn starch is used in the production of molasses and glucose, as well as in the baking, confectionery, paper and textile industries.

Another recipe for cold porcelain and step-by-step instructions for making it at home.

What you need:

3/4 cup PVA glue

1/2 cup water

1 tsp cream (for example, such as Pond's)

1 tsp glycerin (or vaseline)

1 cup cornstarch, plus more for hands

Let's see step by step how to cook cold porcelain at home according to this recipe without using a microwave.

Prepare all the ingredients ahead of time before you start.

If possible, take old dishes. Although cold porcelain is not toxic, it is very sticky and will ruin good cookware.

1. Combine all liquid ingredients in a saucepan. Put it on medium heat. Start stirring and continue until the mixture is smooth.

2. Add starch and continue mixing. Get ready - the mixture will begin to change its consistency very quickly. Keep interfering.

3. At first it will look like liquid cottage cheese ...

4. ... and after a few minutes it will begin to resemble mashed potatoes. When the mass begins to gather in a lump and lag behind the walls of the pan, it is ready.

5. Wrap it in a clean, wet kitchen towel. Then start kneading it with your hands. Since it is still very hot, in order not to burn yourself, soak a towel in cold water, cover the pan with it and dump the mass on a towel. Now break away for a second and fill the pan with hot water and dishwashing liquid and soak all the tools that you used in it.

6. Knead the mass through a towel until it is cool enough to be handled with bare hands.

7. Spread a little cornstarch on your palms and continue to knead the mass without a towel. Place a bowl of starch next to it and dip your hands in it periodically. So the mass will not stick to your hands. You can also dust your work surface with starch to keep the porcelain from sticking to it.

8. This recipe will give you a ball about the size of a grapefruit. After about five more minutes, the mass will become what it should be - soft, plastic and not sticky. The mass of cold porcelain is painted with acrylic or oil paint. This is done just at this stage.

While you are doing the dishes, place the mixture in a tightly sealed container or plastic bag. The dishes must be washed, otherwise it will dry out and then it will be much harder to wash it.
By the way, when you start sculpting, use something like a portable board, etc. For example, a baking sheet covered with aluminum foil works well. When you are done, while the product dries, you can always put it somewhere so that it does not interfere with you, and you with it.