Wash the goy paste. Polishing with GOI paste: a universal remedy for all types of surfaces

GOI paste, developed back in the distant 1930s in the bowels of the State Optical Institute, has not lost its former popularity even now. You can hardly find an owner who does not have a piece of this green (and sometimes other colors) hidden somewhere. Recall how to use GOI paste, and give some tips on the safe use of this "greetings from the past."

To date, there are four types of GOI paste on the market:

• No. 4 is used for the initial processing of the material, if it has not been processed before;
• No. 3 gives the surface a matte look, eliminates all remaining strokes;
• No. 2 and No. 1 complete what their "big brothers" started, make the surface glossy and complete the polish.

The type of GOI paste depends on the size of the abrasive used in its manufacture. Pasta was produced in a hard (bar) or softer (box) version. Why are we talking about GOI paste in the past tense? The fact is that at the moment not a single plant in Russia has the right to produce this product due to the presence in its composition of chromium oxide, which is hazardous to health, this compound is a carcinogen, i.e., it accelerates the development of cancer cells.

Preparing for polishing

The action of GOI paste is the work of small abrasive particles, which, when rubbed, erase irregularities from the surface. Before you start polishing, you need to prepare a small piece of soft cloth and soak it in gasoline (it is not necessary to use automotive fuel, gasoline for lighters will suffice). A small amount of paste is applied to the matter. With the prepared tool, you should first wipe the unnecessary metal surface in order to eliminate excessively large abrasive particles, otherwise the desired surface will not be polished, but damaged. After all, you don’t want to see a scratch on the surface after polishing, right?

Polishing

After preparing the polishing tool, you can begin the process. To properly polish the surface, you need to gently, without sudden movements and strong pressure, rub the desired area with a polish until the surface becomes smooth. If necessary, you should return to the previous stage (if the surface requiring polishing has a large area, the GOI paste will quickly run out).

If the product has many flaws, you should use not one type of paste, but several. So, for primary processing, GOI No. 4 paste is applied to the rag, as the number of flaws decreases - No. 3, and so on, until the surface takes the desired form.

The treated element should be washed with kerosene in order to remove abrasive residues from it. In the absence of kerosene, ordinary running water can also be used, but this is not recommended, as there is a high risk of rust under improper conditions. Given the fact that many polish the necessary surfaces in the garage, where there is often high humidity, this moment should not be discounted.

Carry out polishing work outdoors. The ideal place would be a garage, a well-ventilated workshop, or some kind of open space. Polishing with GOI paste after itself requires washing with kerosene, and inhaling its vapors is dangerous to health.

Polishing of soft metal products

GOI paste can be used to polish products made of any metals, including soft ones such as silver and gold. This procedure will help restore the former shine of your favorite utensils. But polishing such objects requires a special approach.

Consider the polishing process on the example of silver spoons.

1. Before carrying out the procedure, you should thoroughly wash the spoons and clean them with a stiff brush (the most ordinary toothbrush is ideal) with tooth powder applied to it.
2. Then a solution is prepared containing ammonia, tooth powder and soap shavings. All this is mixed until completely dissolved.
3. Spoons are soaked in the resulting solution.
4. Then the mixture should be put on fire and brought to a boil.
5. Spoons are removed, washed in running water and after that they are wiped with GOI paste.

It will be better to use types #1 or #2, as the other two can leave scratches on expensive utensils.

Polishing plastic and glass products

It is amazing, but true: GOI paste can be used to restore the former beauty of aged technology! For polishing plastic products, GOI type No. 2 paste should be used, since more abrasive types can damage soft plastic.

It should be noted that kerosene, gasoline and running water are not used when polishing equipment. Only the abrasive is applied to the rag, without the use of auxiliary agents. The process itself is no different from polishing other materials and objects.

Where can not apply GOI paste?

It would seem that GOI paste is a universal remedy. But no, there are surfaces that you should not touch with this polish due to the fact that such a procedure will either make no sense or be harmful.

First, mechanical watches should not be polished with GOI paste. Types No. 1 and No. 2 will only enhance the visibility of small scratches, emphasize them, and pastes No. 3 and No. 4 can simply erase the top layer of metal, due to which the watch will lose its former gloss.

You should also not use this tool for polishing sapphire glasses on watches - there will simply be no effect, since sapphire glass is very durable.

Precautionary measures

At the beginning, we mentioned that GOI paste is currently not produced in Russia due to its toxicity. However, it is freely available in stores whose owners were able to supply the well-known polish. And if a person acquires this remedy, he should know some precautions in order to avoid tragedy.

• GOI paste should be used with extreme caution, avoiding getting its particles on the mucous membranes of the eyes and nose. If it was not possible to protect yourself from this, immediately rinse the affected surface with running water and call an ambulance.
• Use a respirator or at least a medical mask when working with polish, especially when polishing metals using a cloth soaked in gasoline. You should not expose your body to the risk of poisoning with vapors of chemically complex substances.
• Keep children away from polish storage areas.
• Work with gloves to protect the skin of your hands.

So, GOI paste is an effective but unsafe remedy. Even if you have used it for polishing many times, you should always be on the lookout when working. If the situation allows, it is better to use more gentle methods.

GOI paste can be used for polishing the surfaces of products from a variety of materials. To date, several varieties of it are produced. For each specific material, a specific type of paste should be selected. In addition, the polishing procedure itself must be done correctly. We will talk about how to use GOI paste below.

History of pasta

Then pour a little ammonia into a glass of water, fine-tune the soap and pour in a little powder. All this must be thoroughly mixed until completely dissolved. Next, the liquid is poured into some kind of enameled saucepan. After that, silver cutlery is lowered into it. Then put the saucepan on the fire and bring the liquid to a boil. After that, the silver should be removed and washed in cold water. Then you can start processing it with GOI paste according to the method described above.

What can not be polished

Next, let's see in which cases GOI paste cannot be used. How to use it, you now know. However, in no case should this tool be used to process gilded things. Otherwise, the upper valuable layer will be very quickly erased to the lower metal. Steel (except knives) and nickel are usually processed not by hand, but using a special machine. Polishing of metal watches is also done with a cloth. However, they must first be disassembled and the mechanism pulled out. Do not start polishing too heavily scratched surfaces from option No. 2 or 1. In this case, the defects will become even more noticeable. Sapphire crystals on watches cannot be polished with GOI paste. She just won't take them.

Where is the tool used

We figured out how to polish with GOI paste. Now let's see where exactly this tool is used. GOI paste is used not only at home for polishing, silver, watches, dangerous blades and razors, etc., but also in production. In the latter case, it is most often used in the processing of products made of non-ferrous and ferrous metals. Polishing is done using special polishing machines with felt wheels.

Foreign analogues

Today, imported versions of such pastes can also be found on sale. A very popular option is the French Dialux. The latter has a harder consistency and is worse applied to the skin of the bar when sharpening knives than GOI paste. Dialux is considered more convenient to use. You can polish metal surfaces with it much faster and better. However, these pastes are more expensive. There are many more varieties of Dialux than types of GOI. This tool is produced in sticks, packed in paper of different colors. According to them, you can navigate in terms of using Dialux for a particular metal.

This paste is applied in much the same way as GOI, that is, with soft, smooth movements. However, its layer when polishing knives or other steel parts should be thinner. In this case, the paste will work in conjunction with the skin. As a result, the polishing efficiency will increase significantly.

Well, we hope we have answered the question of how to use GOI paste correctly. The procedure for polishing with this tool is quite simple. Most importantly, wash your hands thoroughly after polishing.

The modern market for chemical products offers motorists a wide range of abrasives for grinding and polishing. Many compositions have a very narrow specialization, that is, they are designed to process only a certain type of surface, and branded polishes are also very expensive. Today we will tell you about GOI paste - a universal tool that can be used to polish different materials.

1 Composition and technical characteristics of GOI paste

Abrasive paste GOI (State Optical Institute) was developed back in the 30s of the XX century and has since been used for high-precision finishing of surfaces of glass, ceramic and metal products. In those years, the paste included chromium oxide powder, which provided it with a recognizable dark green hue.

Today, chromium oxide is not used in the production of abrasives, as it is recognized as extremely toxic. Instead, aluminum oxide is used to make GOI paste, which gives the composition a white or red color. For polishing, it is better to use a red paste, and white - to create the most smooth glossy surfaces.

GOI paste is usually referred to as a universal tool that can be used to polish various materials. In addition to aluminum oxide, modern GOI paste for polishing windshields includes special binders and plasticizers, in particular, stearin, kerosene and silica gel. Depending on the size of the abrasive fraction, several types of polishing paste are distinguished:

• No. 4. Designed for initial surface treatment. Able to remove a layer with a thickness of 20 to 40 microns.
• No. 3. Used to create matte surfaces without traces of abrasive particles.
• No. 2 and No. 1. Designed for fine, finishing polishing of surfaces. Provide removal of a layer with a thickness of less than 0.1 microns.

On the market, GOI paste can be found in different packages: in bars, tubes, containers. For grinding machines, special polishing wheels are also made from paste. Car enthusiasts and specialized service centers use this composition for polishing and grinding car mirrors, glasses, headlights and other lighting devices.

2 Rules for using paste for polishing car headlights

Headlights are one of the important elements of the car, affecting the safety of using the vehicle at night. They must produce an intense light output strong enough to provide good visibility. A significant part of the accidents that occur at night, happens due to poor lighting or problems with lighting devices.

Modern cars are usually equipped with plastic headlights, but there are fog lights and other light sources made of glass.

During the operation of the machine, the glass of its headlights becomes cloudy due to constant exposure to environment. Microchips, scratches and cracks appear on lighting devices due to the ingress of small stones and dust into them. Plastic headlights often become cloudy due to exposure to engine oil, automotive chemicals and tar. To restore the original transparency and functionality of the headlights, you can use GOI paste.

Periodically, it is necessary to clean the headlight from excess abrasive and dust with a dry cotton cloth in order to evaluate the results of polishing. Before polishing, it is necessary to assess the amount of damage to lighting fixtures. To do this, the surface of plastic or glass headlights is thoroughly cleaned of dust and dirt with special detergents. If dirt particles are not removed, they can cause new damage to the surface of the headlights when sanded. In order not to damage the body parts adjacent to the lighting fixtures with abrasive compounds, it is recommended to dismantle the headlights before processing.

There are several ways to polish headlights with paste. Processing can be done manually or with a drill with a special felt nozzle. Damaged surfaces should be treated for 3-5 minutes to achieve the most positive effect. Periodically, you need to clean the headlight from excess abrasive and dust with a dry cotton cloth to evaluate the results of polishing. Processing is continued until the headlight becomes absolutely smooth.

If grinding did not allow to restore the original transparency of the headlight, it means that it has defects on the inside as well. They arise under the influence elevated temperature when using xenon or halogen lamps, causing the inside of the headlight to become cloudy. To restore the transparency of the device, you will have to completely disassemble the headlight and polish it from the inside. For glass headlights, polishing from the inside is not required, it is enough to process them from the outside, and then wash them with glass washing liquid.

It is important to note that the surface of modern plastic headlights often has a special protective coating that is erased during grinding. Therefore, immediately after processing and cleaning the lighting devices, they must be re-coated with a special transparent varnish in several layers. Complete drying of such a varnish occurs no earlier than a day from the moment of application.

3 Can Goi paste be used to treat car windows?

During the movement of the car, dust, particles of dirt and debris, carried by oncoming air flows, constantly get on the outer surface of the saloon glazing. They can damage the glass and adversely affect its smoothness and transparency. The windshield gets more serious damage when it collides with small pebbles flying out from under the wheels of oncoming vehicles.

Glasses are also scratched when using power windows due to dust and sand particles stuck on the inside of the seals. And the windshield is scratched by grains of sand settling on the windshield wipers. You can also damage the glass surface with your own hands if you use excessive force when cleaning the glass with a scraper from snow and ice.

GOI glass polishing paste should be used only if you are confident in your abilities and do not allow scratches during use. All this leads to cracks, scratches and tarnishing of glasses, which worsens visibility and appearance car. Insignificant glass damage (up to 300 microns) can be effectively eliminated using GOI polishing paste. However, it is impossible to carry out grinding in the presence of significant damage, such work can lead to curvature of the glass surface and an even greater loss of transparency.

Glass must be thoroughly rinsed and dried before processing. Areas with damage are best marked on the inside with markers, and the adjacent parts of the body, hood and roof should be pre-protected with masking tape. Glass polishing by hand and especially with the use of electric tools should be done very carefully and carefully. Any sudden movements can damage the glass or other parts of the car.

4 How to properly dilute and use abrasive paste?

Before polishing the car with the purchased paste, the abrasive must be softened. In the initial state, this material is too dry, which is why it is very difficult to apply it to the polishing cloth, and hard lumps of the paste can damage windows and other parts of the vehicle.

To soften the paste, you can use different liquids, from engine oil and distilled water, to refined gasoline and white spirit. We do not recommend using flammable chemicals to dissolve the paste. With them, you not only endanger yourself, but also endow the treated machine parts with a pungent odor that will be difficult to get rid of.

In its normal state, GOI paste is very dry, which prevents easy application to the polishing cloth. The easiest way to dilute the paste engine oil, a few drops of which should be applied with a pipette or syringe to a hard bar of abrasive. With a cotton or flannel cloth, you need to rub the liquid into the bar until the paste becomes similar in consistency to plasticine. In this form, the agent no longer poses a danger to the treated surfaces.

To increase the uniformity of the resulting paste, the mixture of GOI with engine oil can be slightly warmed up in microwave oven and mix thoroughly.

The principle of polishing surfaces with paste is that the fine particles contained in it clean off the thinnest layer of plastic or glass, along with the microcracks present on them. The prepared paste is applied to a cloth or polishing wheel and rubbed lightly on hard surfaces to remove particulate matter. Then the surface with existing damages is processed by reciprocating movements with partial overlapping of the next strip with the previous one. After that, surface treatment with a cloth or a circle in a spiral direction from the edge to the center is allowed.

The surface to be treated must be damp and periodically wiped with a damp cloth during processing. Dust removal will also allow you to control the condition of the machined part. For polishing with a grinder, it is necessary to use a power tool at an average speed - less than 1000 rpm. Handle glass and other materials with smooth movements, without stopping in one place. The abrasive wheel should be positioned at an angle of less than 5 degrees to the surface to be machined in order to have maximum contact with the workpiece. If the part is very hot, then processing should be suspended. Polishing is best repeated every year or two, so that important elements of the car remain operational.

The modern chemical industry offers a wide range of specialized abrasive compounds for polishing and grinding any materials. However, all modern tools are united by a narrow specialization (by type of surface to be treated and by grain size), as well as by the serious cost of branded polishes. As a universal analogue that adequately copes with the finishing of metal, plastic or glass, one can name the long-known GOI paste.

Composition and properties of GOI paste

Abrasive paste produced by the State Optical Institute was developed in the 30s of the last century as a means for high-precision finishing of surfaces of metal, ceramic and glass parts. The original composition of the paste contained chromium oxide powder, which provided a memorable dark green tint to the composition.

Currently, chromium oxide is banned for use, as it is a toxic compound. Therefore, modern GOI pastes are produced on the basis of aluminum oxide. and are red or white.

The red-tinted paste provides intense polishing and white composition designed to create a smooth glossy surface.

The paste also contains plasticizers and binders, such as stearin, silica gel and kerosene, and auxiliary additives.

Depending on the size of the abrasive fraction, GOI paste is divided into the following types:

• No. 4 is intended for primary processing (removable layer from 20 to 40 microns);
• No. 3 for the formation of a matte surface without scratches from abrasive particles;
• No. 2 and No. 1 for final fine polishing (removable layer no more than 0.1 microns).

According to the form of release, GOI paste comes in bars, tubes and containers, and there are also polishing wheels impregnated with the composition for grinders.

Car enthusiasts and service stations successfully use GOI paste for grinding and polishing car glass (especially windshield), mirrors, as well as headlights and other lighting fixtures.

headlights

Car headlights are an important element in ensuring traffic safety. They must provide the intensity and dispersion of the light flux sufficient for confident movement at night and in conditions of poor visibility. The vast majority of traffic accidents at night occur due to insufficient lighting or malfunctioning lighting devices.

Most modern cars are equipped with plastic headlights, but there are headlights and fog lights with glass diffusers.

With prolonged use of the car, the glass of the headlights becomes cloudy under the influence of the external environment. Solid dust particles and small stones leave scratches and micro-chips on the outer surface of the headlights. Plastic headlights also often become cloudy from the ingress of tar, engine oil and aggressive auto chemicals. You can restore the transparency of the headlights using GOI paste. To assess damage to the outer surface of the headlights, they should be thoroughly cleaned of dirt and dust using specialized detergents. Particles of dirt not removed from the glass of the headlight will lead to the formation of additional scratches during subsequent grinding.

Polishing headlights with GOI paste is done manually or using a felt nozzle on a drill. To achieve the desired effect, it is necessary to treat the damaged surface for at least 3-4 minutes. Periodically, the headlight should be cleaned of dust and excess paste with a dry cotton cloth, and the result should be evaluated. Grinding is carried out until the headlight glass acquires absolute smoothness.

If the transparency of the headlight could not be restored by grinding from the outside, then the defect is on its inner surface. This problem is typical for plastic lighting fixtures: under the influence of high temperatures from halogen or xenon lamps, the inside of the headlight becomes cloudy. To restore transparency, it is necessary to disassemble the headlight and polish the inside of the lens. Glass headlights, as a rule, do not need to be polished from the inside, it is enough to wash the light-transmitting surface well with a glass cleaner.

In a similar way, using GOI paste, you can restore the appearance of burnt or worn taillights.

Attention! During manufacture, a protective coating is applied to the surface of plastic headlights, which is peeled off during the grinding process. Therefore, after polishing with GOI paste, it is necessary to re-coat the treated area with a special varnish in several layers. The protective film dries after at least 24 hours.

The sequence of actions when polishing the headlights with your own hands can be seen in the following video:

Glass

When the car is moving, grains of dust and debris carried by the oncoming air flow intensively damage the outer surface of the cabin glazing with sharp edges. Additional damage to the windshield in the form of chips and cracks is caused by small stones flying out from under the wheels of oncoming vehicles, as well as grains of sand that have fallen on the wiper blades. Door glasses with repeated activation of power windows are scratched by solid dust particles that have settled on the inside of the seals - velvet. Excessive efforts when cleaning the glass from adhering ice and snow with a hard scraper or wiping with a dry coarse cloth also add mechanical damage.

As a result, the glass becomes dull, cracks, scratches and abrasions impair visibility, and at night they distort the headlights of oncoming cars, blinding the driver.

Shallow damage to glass (up to 300 microns), microcracks, chips and local abrasions from wipers can be eliminated by grinding and polishing glass using GOI paste.

In the presence of deep scratches, extended cracks and chips, grinding can lead to loss of transparency and curvature of the glass surface. In this case, it is advisable to replace the glass with a new one.

Before polishing car windows with GOI paste, they must be thoroughly washed and dried. Defective zones are recommended to be marked with a marker on the inside of the glass. Adjacent parts of the roof, pillars and hood must be protected from accidental damage with masking tape or other material. Polishing (especially when using a power tool) should be done with care so as not to damage the glass.

To polish the windshield, use only GOI finishing paste with a minimum size of abrasive particles (No. 1).

How to breed

Before use, GOI polishing paste requires preliminary softening. Initially, the paste can be quite dry, making it difficult to apply to the polishing cloth, and hard clumps will cause unnecessary scratches on the glass during processing.

The list of liquids used to soften the material is quite extensive: from distilled water, industrial and motor oils to white spirit and refined gasoline for lighters.

It is not recommended to dissolve GOI paste with gasoline or white spirit. due to their flammability, besides, it is difficult to neutralize the specific pungent odor of these liquids later. A more practical way is:

• a small amount of engine oil should be applied to a bar of GOI solid paste with a syringe or pipette;
• the liquid is rubbed into the bar with a flannel or cotton cloth until the paste becomes like plasticine in consistency;
• the resulting plastic mass can polish defective areas of glass or headlights without the risk of damage.

For greater uniformity, the mixture of GOI paste with engine oil can be heated before use (for example, in a microwave oven) and mixed thoroughly.

Advice! Prepare the polishing mixture in batches. Over time, the liquid evaporates and the paste becomes solid again.

The glass or plastic surface to be treated must also be moistened with water, lubricated with industrial or engine oil. If you apply GOI paste on dry glass, it is likely that the outer layer will become dull.

How to use

The principle of processing with GOI paste is that the small particles contained in the paste clean off a thin layer of glass simultaneously with microcracks and scratches.

The pre-prepared paste should be applied to a cloth or buffing pad and lightly rubbed on a hard surface to remove excess and particulate matter. After that, the places of defects are polished first with reciprocating movements with partial overlap of the strips, and then in a tapering spiral from the edge to the center of the damage.

Important! The paste should be applied only to the working surface of the instrument, and not to the glass itself.

Periodically wipe the treated element with a damp cloth and control the condition of the polished surface.

Polishing with GOI paste using a grinder should be done at medium speed (no more than 1000 revolutions), with smooth movements without stopping the working tool in one place. The grinding wheel should be at an angle of no more than 5 degrees and have the maximum possible contact area with the workpiece. Should be constantly check the degree of heating of the polished surface(especially with plastic headlights) and, if necessary, stop grinding until the part has cooled.

After polishing, the remaining paste and abrasive dust should be washed off with plenty of water, and then wipe the glass dry with a microfiber cloth.

To maintain the effect, the polishing procedure is recommended to be repeated approximately once every 1.5-2 years, depending on the operating conditions of the machine.

Affordable and effective tool

GOI paste is a polishing agent for products made from different metals. And each has its own variety. It is important not only to choose it correctly, but also to know how to use GOI paste correctly.

Varieties of green polish

Three types of polishing paste have been known since Soviet times:

• No. 4. She made the first rough processing.
• No. 3. The surface becomes matte, without strokes.
• No. 2 and No. 1. Used for finishing, adds gloss to surfaces.

These varieties differ in the size of the abrasive particles included in the paste.

This drug was produced:

• in a solid bar;
• in a box in the form of a viscous liquid mass.

This tool is popular due to its excellent properties and inexpensive price.

Getting ready to polish

The use of GOI paste has a number of specific features. It turns out that the remedy needs to be prepared. How to do it?

Take a soft cloth. Flannel is best for this procedure.

Soak a cloth in gasoline. The one that is poured into lighters is also suitable.

Apply a thin layer of paste to the moistened cut.

Wipe over the unwanted piece of metal to remove oversized pieces that will lead to scratches.

It is strictly forbidden to smear the product itself with the product!

Getting Started

The preparation was successful: the flannel cloth was moistened with paste and gasoline, all unnecessary large grains were removed. We start polishing.

Important: do not press on the product, make smooth movements with your hand and just rub the surface.

When you notice that the product has become smooth, stop. It's polished.

Please note: from time to time it is necessary to apply industrial oil of a liquid consistency to the processed object.

We remove gross flaws on products

There are several types of pasta

For polishing products with severe defects, processing is carried out with all types of paste. The sequence of their application is as follows: No. 4 → No. 3 → No. 2 → No. 1.

Rinse the polished product in kerosene. It can be freely purchased at the pharmacy network. After drying it, apply zaponlak, which fights the oxidation process. Products coated with such a preparation will not need re-polishing for a long time.

We clean glass, plastic, silverware

Need to tidy up the display glass and cell phone case? Pasta GOI will come to the rescue. Plastic is a fragile material, it should be handled with care, so take the softest tool of all - No. 2. Otherwise, there will be no number of scratches on the cover.

But how to polish plastic? There are no special additions: like any other item. The procedure is the same as described above.

To begin with, wipe the glass with rubber circles, and only then polish it with a cloth soaked in the paste.

Please note: do not use gasoline and oil when processing the phone!

Silver can also be processed with this reliable tool. Lighten spoons, forks and cups. Only first boil in a solution mixed from:

• a glass of water;
• two teaspoons of ammonia;
• 50 grams of bar-cut soap;
• 50 grams of washing powder.

After this treatment, polish with paste, and let your silver items shine with renewed vigor.

Motorists use GOI paste to polish the windshield. Watch the video on how to polish the IZH wing with GOI paste:

Stop! Do not polish!

But a miracle - not all objects without exception can be polished with a means. There are also those that are banned:

Gilded items. Under the action of the paste, the top layer, which is the main value, will be erased.

Steel (except for knives, which are polished with a bar with stretched skin) and nickel. They are processed with a special device, and not by hand.

Metal clock. But: you can polish if you remove the mechanism from them.

Sapphire crystals on the watch. Not susceptible to paste. Polishing will not bring the desired effect.

Only when used correctly, a unique polishing agent will bring results.