Cocktails are different, and not all of them are designed to be taken "on the chest." The paints and varnishes that we use to restore the car's paintwork are, in fact, also cocktails - correctly prepared mixtures of several ingredients. And since we strive to ensure that the restored car (wing, door) after repair sparkles brighter than the new one, and the paint lies evenly, then our “paint cocktail” should be prepared competently, with sense and arrangement, and not concocted anyhow.

Today you will know

Ingredients

First of all, let's decide on the type of our "paint cocktail": whether it will be ordinary acrylic enamel (which is less likely), or metallic or mother-of-pearl type paint (most likely).

Conventional acrylic enamel - two-component, with a hardener. The “ingredient kit” for such materials consists of three jars. For example, a liter of paint, half a liter of hardener and 100-150 ml of thinner. That is, when buying a liter of paint, you actually get about 1.6-1.7 liters of diluted paint.

In the case of “metallic”, the base paint is necessarily coated on top with a transparent varnish - without it, spectacular coatings look nondescript, and the weather resistance of two-layer coatings is much higher. Transparent varnish, as well as acrylic enamel - two-component, with a hardener. But the “base” does not need a hardener - it is one-component.

Thus, the “kit” for two-layer coatings already consists of five cans. For example, a liter of "base", 500-700 ml of thinner for it, a liter of clear top coat, half a liter of hardener and 100-150 ml of thinner for varnish - only 3.3 liters! At the same time, the most diluted paint was no more, the same 1.7 liters.

Making kneading

Before filling the gun, mix the components of the purchased paint.

For the correct mixing of the components, which results in a coating material of the required viscosity, the following conditions must be met.

Dishes

It is important that the container in which we mix is ​​strictly cylindrical (flat bottom and vertical walls). Only in such a container can you evenly mix the components and correctly measure their quantity.

It is better if it is a special measuring utensil in the form of a transparent plastic jar with a lid. Such cans are marked, which allows mixing materials in the required volume ratio (1:1, 2:1, 3:1, 4:1, 5:1, etc.).

Measuring containers are produced in different volumes, ranging from 100 ml to almost half a bucket

Also, for dosing and mixing paintwork materials, it is convenient to use a special ruler with marks that determines the volume fractions of the components.

Pour the base into a cylindrical dish to a certain division, and then add the hardener (if added), then the solvent to the desired mark. All mixed with the same ruler - and you're done. Often a measuring ruler is sold along with a paint kit, and on all branded cans the proportions are indicated according to these rulers.

It is convenient to measure the required number of components using a measuring ruler. Then he chatted with the same ruler - and you're done.

Proportions

With the abundance that has reigned in the paint and varnish market, it is impossible by definition to give, as they say, one recipe for all occasions. Yes, and you don't have to. There is TDS - you know the rest from whom.

However, it would be helpful to provide some general guidelines. In principle, we have already talked about them a little higher: two-component products usually add up to 50% hardener and 10-20% thinner. The degree of dilution of base enamels varies, as a rule, in the range of 50-80%. Well, see the exact proportions already in the instructions for a specific product: all canned varnishes and enamels have indications in the form of pictograms that inform you in what proportion you need to dilute the paint with a hardener (if the material is two-component) and thinner.

We remind you: in one-component materials (alkyds, base enamels, 1K primers), only thinner is added; in two-component materials (acrylic enamels and varnishes, 2K primers), a hardener is first added, then the mixture is brought to the desired viscosity with a thinner.

If you order paint for selection in the laboratory, then you will be given a set of components (usually ordered as a set), mixing which you will get a ready-to-use material with a working viscosity - as they say, “under the spray”. Or they will give out already diluted paint (naturally, this only applies to the base, since the life time of two-component materials after mixing is strictly limited).

Additives

A description of the recipes for preparing paint and varnish cocktails would be incomplete without mentioning additives - materials used to change individual characteristics of enamels, varnishes or primers.

For example, to create a rough surface - very often the plastic bumpers of SUVs are painted this way - there are structural additives of varying degrees of graininess. And in general, so that the paint on the plastic does not crack, 20-40% of the plasticizer is necessarily added to it. There are matt elastifiers designed to reduce the gloss and coloration of plastic parts such as Mercedes-Benz side trims.

When painting with spectacular two-layer coatings, these additives must be mixed with the top coat (it is recommended to add a plasticizer to the filler primer as well). Read more about supplements and their use.

We measure viscosity

Any painter should be able to control such a vital indicator as viscosity. What for? to match the recommended value. Again, why? To evenly apply the material to the surface, and obtain a coating of the required thickness with the planned properties - beautiful and durable.

"Viscosity" (from lat. viscosus - sticky, sticky) - a value that characterizes the fluidity of a liquid.

What for?

Filtering

The prepared paintwork material must be filtered before being filled into the spray gun tank, as it may contain foreign inclusions that got there during the preparation process, clots, etc. Otherwise, it is impossible to guarantee a high-quality surface, because all this debris may eventually end up on the surface being painted.

For filtration, it is convenient to use disposable paper funnels with a filtering nylon insert (mesh size, as a rule, 190 microns). I inserted the funnel directly into the tank, strained it - it's ready, you can paint!

We fill the paint tank only with the use of a filter funnel

Basic Mistakes

To achieve a consistently high quality of work performed is possible only if the technological recommendations for the use of certain materials are observed. There is simply no other way for those who want to repair modern cars and repair them with high quality.

Meanwhile, ignoring technological requirements remains the main (!) Cause of defects and errors. As the saying goes, "... so many times they told the world" ...

But “free morals” have always been and will be: we adjust the airbrush “by ear”, we mix the paint “by eye”, we forget about strictly defined “lifetimes” of products prepared for use.

For example, in an hour, the varnish changes viscosity by an average of 100%. He thickens. Before lunch, we stirred it, measured the viscosity - 20, satisfied we left for a meal, we return in 50 minutes, and he already has all 40! Of course, the material can no longer be used. But how often does anyone consider such a "trifle"?

How often does anyone remember that the material into which we did not add the hardener will no longer be able to properly harden, no matter how dry it is. Acrylic two-component materials, after all, are cured in the same way: due to a chemical reaction between the acrylic binder (base) and the substance for crosslinking molecules - polyisocyanate (hardener). And only the manufacturer of paintwork materials can know how many -N=C=O units (present in the hardener) are necessary to react with a certain amount of OH units (which are part of the base) and turn the material into a strong polymer film (more on this).

So it turns out that if we pour not enough hardener, there is simply not enough crosslinking material for the correct curing of the film. The coating is soft, uncured.

The opposite situation - with an excess of hardener (and, accordingly, an excess of -N=C=O units) has the opposite effect - the coating turns out to be too hard, but at the same time inelastic, highly prone to peeling, cracking, and chipping.

So if it is written on a can of varnish to dilute in a ratio of 2: 1, then you should not be too lazy to measure strictly two parts of varnish and one part of hardener. No more, no less.

Correct polymerization of two-component materials is only possible if the correct mixing ratio with the hardener is observed.

Well, the fact that acrylic materials can only be cured with original hardeners is generally not subject to discussion. In acrylic systems, the copolymer and polyisocyanate are carefully matched to each other, and if we take a hardener from another varnish or another manufacturer, we get another polymer with completely different properties.

The jar with the remains of the hardener must be tightly closed, as the hardener reacts with air moisture, as a result of which it becomes cloudy and crystals precipitate, sometimes gelation. To prevent air from entering the partially used can of hardener, it is recommended to turn it upside down and place it on the lid, and store it in this position.

Construction oil paints are thickly ground or ready-to-use. Thickened paints must be diluted with a specially designed liquid - a solvent. Also, oil paints are mixed with a solvent if they have dried over time, or they are planned to be used as a primer. Thinners are chosen in accordance with the characteristics of the surface to be painted and its absorbent properties.

They dilute oil paint with chemicals that you can always find in hardware stores:

• White spirit is the most common liquid.
• Refined and unrefined turpentine is used to dilute many paints and varnishes. With purified turpentine, the drying time of the paint decreases, with uncleaned - on the contrary, it slows down.
• Kerosene is great for restoring old oil paints. Together with kerosene, it is mandatory to add a desiccant - turpentine, for example. The disadvantage of this thinner is an increase in drying time - up to 10 days.
• Gasoline: with its use, the paint becomes matte. This option is used in construction to dilute thickly grated paint and varnish coatings.

Thinners are used to better penetrate the material of the painting surface, they dissolve the film-forming components of the oil paint. In the mixing process, extreme precision is required, since exceeding the norm of the amount of a substance can easily spoil the paint. A solvent-based mix is ​​an excellent primer that can be used both indoors and outdoors.

With the help of solvents, the paintwork material is given the desired consistency. Before applying to the surface, the coating should be thoroughly mixed for 10-15 minutes until smooth. The main component that contains oil paint is drying oil, it is it that is positioned as a universal solvent for all types of work with oil paint. Due to the high content of drying oil, oil paint forms a thin film on surfaces during application. Depending on the type of paint, exactly the type of drying oil that is indicated in the composition is used. Oil paints are classified according to generally accepted standards, in addition to drying oil, they also contain special pigmenting components and fillers. If the paint has only one component, then it is called the name of this component - for example, ocher.

The number 2 is usually present in the name of oil paints: this means that the material can be applied to all types of surfaces, provided that the coating is diluted with the same drying oil that comes with this paint. According to the type of drying oil, oil paints are divided into the following categories:

• On a combined or composite drying oil, the manufacture of which is not regulated by state standards. Such a coating is unsafe for use in houses and apartments: in its composition it contains harmful and toxic substances that continue to emit an unpleasant odor for a long time after drying. Designated as MA-025.
• Natural drying oil based on vegetable oils - linseed, soybean or sunflower. Contains 97% natural ingredients and 3% desiccant. Such paint is marked as MA-021. Paints based on natural drying oil are used for painting surfaces in residential premises: walls, windows, doors, etc.
• Artificial glyptal drying oil, a substitute for natural. On the packages it is designated as GF-023.
• On pentaphthalic drying oil - PF-024, which half consists of natural oils with the addition of glycerin, desiccant and phthalic anhydride.

In accordance with GOST, the packaging of paint and varnish products must indicate which solvents are suitable for this type of paint and in what proportions. It also indicates the paint consumption per 1 square meter when applied in one and two layers. Oil paint has the greatest strength and durability among paints and varnishes. It is used for interior and exterior decoration: oil paint fits perfectly on plaster, concrete, wood and metal surfaces.

The applied oil paints are not only decorative, they protect surfaces from moisture, corrosion and rotting processes, and also serve as a barrier to external influences. Diluted oil paint is successfully used as a primer base, which will serve as a binder.

Water based paint is durable and non-toxic, easy to apply, does not crack, and is affordable. The dye is easy to use, provided the correct consistency is achieved. How to dilute water-based paint, what types of it are, we will consider in this article.

Types of water-based paint

Water-based paint is a paintwork material, the basis of which is water. It is mainly used for painting interior surfaces of premises, but some varieties are also used for outdoor work.

Water-based dyes are divided into the following types:

• based on PVA glue - polyvinyl acetate, the cheapest material;
• based on liquid glass - silicate, have poor moisture resistance;
• resin-based - silicone and acrylic, have the best indicators of durability and strength, the latter are also the most expensive in price;
• latex - resistant to fading and moisture.

Any type of the listed water-based paints can be diluted with water, which is convenient and practical to use.

When to dilute the water-based composition

Usually, if the paint was bought still within the expiration dates, it is not diluted after uncorking. In this case, the consistency of the composition is optimal for use.

Dilution with water is required in two cases:

• if a previously opened and already standing can is taken for reuse, the paint in which has had time to thicken and dry;
• if the staining process will take place using an airbrush, into which a more liquid composition is required.

To determine whether it is necessary and water, it is thoroughly mixed. If a large amount of non-flowing composition remains on the blade, then dilution is required, the amount of liquid is determined by eye. The main thing to consider is not to overdo it with the addition of water, as this may impair the performance of the applied layer.

If, after opening, it is found that the composition is too liquid or an excess amount of water is added when diluted, the paint is left open for a while.

Many are interested in the question: is it possible to dilute water-based paint if it has dried? No, in case of strong drying, the paint cannot be restored.

What is applied

Water-based paint is a quick-drying water-based composition without a strong odor. In the dye, along with water, small drops of various fillers are dissolved, which give it the final performance properties. After applying the paint to the surface, the liquid from its composition is partially absorbed, and partially evaporates. The speed of the process allows the protective layer to form quickly, but the end result depends on what the surface is made of. Moreover, on what the coloring composition will be applied, it will depend on whether and how to dilute the water-based paint.

Applied in two ways:

1. Manual. In this case, rollers and brushes are used. With this application of paint on ceilings and walls, a more viscous mixture structure is required, in this case it is easy to ensure a uniform application of the layer and its quality, in which there will be no smudges.
2. Mechanical. In this case, a spray gun or spray gun (manual or electric) is used. The use of the device can greatly facilitate the process of staining and cover large areas. The peculiarity of this equipment is that the ink mixture passes through nozzles under pressure, due to which it lies on the base in a more uniform layer. Therefore, the composition for use in the spray gun should be more liquid consistency than in the first method, about one and a half to two times.

Breeding rules

To apply a quality layer to the surface, you need to know how to properly dilute water-based paint.

The following rules must be observed:

• the amount of water for dilution should not exceed one tenth of the total volume of the thickened dye;
• it is necessary to dilute the paint gradually, achieving the necessary consistency with thorough stirring (the procedure can be carried out with a construction mixer or a drill with a mixing nozzle);
• having received the composition of the desired density, it is not used immediately for dyeing - you should wait for the foam to settle.

To determine the sufficiency of diluting the paint, you need to draw a brush moistened with it over the surface - the layer should be uniform, without smears, not drain or roll.

To be sure to do everything right, you should use the advice of the masters on how to properly dilute water-based paint.

They are as follows:

1. On the packaging with paint, the volume of the composition is usually indicated, but when it is necessary to dissolve the residues, it will not be possible to accurately determine their amount. In order to calculate with a minimum error how much coloring composition is left, you need to pour it into another dish using a measuring cup or a liter jar.
2. The temperature of the water used to dilute the paint should be about twenty-five degrees. Too cold or hot water will adversely affect the quality of the resulting mixture.
3. The best diluent is purified bottled water. Impurities in ordinary or technical water adversely affect the quality characteristics of water-based paints.

By following these simple rules, you can achieve good quality coloring composition.

How to breed color

To implement design solutions, the use of a colored dye is often required. But it is not always possible to find the required shade on sale, or only the white composition remains available. To get the desired tone, you can use special pigments and study the question of how to dilute the color in water-based paint. Moreover, it is quite simple to do this.

For work you will need:

• a container with a color of the desired shade;
• clean paint can;
• mixer;
• purified water at room temperature.

It is required to pour the existing white water-based paint into the washed and dried container, determine whether it needs to be diluted with water. Then you should gradually add pigment to it with constant stirring with a mixer until the desired color is obtained. It is important to add pigment in small portions so as not to miss the moment of obtaining the desired shade.

Adding decor

Often, a design decision requires the use of not only colored dyes, but also the addition of decorating elements (additives) to them in the form of sparkles, mother-of-pearl powders, and more. Such compositions help to create non-standard fabulous or space interiors.

Before you dilute water-based paint for walls or ceilings, you need to consider how much of it you need for painting. The remaining paint with dissolved decorating additives is used for further application of patterns.

It should be remembered that when applying several layers, each subsequent one is applied an hour after the previous one, otherwise the paint may not set and will continue to roll down.

Breeding water

Sometimes you can find recommendations that solvents for enamels and oil dyes can be used to dilute water-based paints. This is wrong, because with this method, the coloring composition collapses, and this may not happen immediately. The best liquid for diluting water-based paints is water.

1. Liquid temperature. For internal work, water at room temperature is used, and for external work, water is used, which slightly exceeds the corresponding indicators of ambient air.
2. When deciding how to dilute a water-based paint, one must take into account the fact that at low temperatures the compositions thicken, and at high temperatures they become more liquid.
3. It is recommended to use drinking purchased, distilled (sold in pharmacies and car dealerships) or home-purified water (boiled and settled).

Analysis equipment

To obtain a high-quality layer during painting, the coloring composition must have an optimal consistency. With the wrong viscosity, adhesion is significantly reduced, which is fraught with peeling of the coating. This, in turn, leads to redoing the work, up to the removal of the soil layer.

At home, when repair work is carried out quite rarely, the viscosity is determined visually. And for those who do painting work quite often, it is useful to have a device called a viscometer in the household.

This device is very useful when deciding how to dilute the water-based paint for the ceiling - its consistency should not be either too thick, as this is fraught with uneven coloring, or too liquid, which will lead to drops and sagging.

The tool is a measuring container with a calibrated hole. With it, viscosity is determined by the time it takes for a certain amount of dye to flow out. As the dilution proceeds, the composition is poured into the viscometer by plugging the hole with a finger. Turning on the stopwatch and opening the hole, detect the moment when the paint stops flowing out - the value of the stopwatch will be an indicator of viscosity. For each type of dye, the optimal value is indicated on the package.

Instruction

Water-based paints are designed for both interior and exterior finishing work. This type of paint is suitable for application on almost any surface. Water-dispersion paints consist of a binder and pigments. There are several main subspecies of this type of paint.

Polyvinyl acetate paints are made on the basis of PVA glue and are perhaps the most affordable. However, this subtype of water-based coating is the least stable and, moreover, does not have a very wide color palette.

Silicate paints are a solution of liquid glass, in which a special pigment is added. This is a durable coating used for both interior decoration and exterior work. The only disadvantage of silicate paints is their low water repellency. The composition of these paints includes alkalis, which, if they come into contact with the skin or mucous membranes, can cause severe inflammation. Therefore, it is necessary to work with them in special suits.

Silicone paints are made from silicone resins that are miscible with water. This type of coating is considered one of the most modern.

Acrylic paints are based on acrylic resins, which give the coating additional elasticity and strength. The surface with an acrylic coating will have increased moisture and wear resistance. Acrylic paints are the most expensive in the entire line of water-based paints.

Latex paints are the most popular type of water-dispersion coatings. Surfaces painted with such paints can be washed frequently. In addition, latex paints can protect walls from minor mechanical damage. Latex paint applied in two coats can close a 1mm wide crack.

The active pigments that make up water-dispersion paints are bound by the elements of water. Therefore, drinking water is also used for thickened paint of this type.

Take a clean bucket. Pour in the paint carefully. Gradually pouring in water and continuously stirring the paint with the help of building, bring its composition to the desired consistency.

If necessary, give the paint the desired color using a special tint. To do this, take a shallow container and mix the color in it with a small amount of water-based paint. Gradually pour the resulting mixture into the bucket with the main paint with continuous stirring. Get the shade you want.

Water-based paints can be applied using a special roller or brush. The coating should be applied in 2-3 layers, and each subsequent layer is applied only after the previous one has completely dried.

We all know that a good airbrush can successfully paint large and small surfaces, as well as some products with a uniform, thin, smooth layer of coatings, while saving valuable time and the paint itself. Before starting work, it is always necessary to prepare paint or other composition for work.

We also know that not all paints are equally useful for our paint sprayer. Thick paint must be strained and diluted according to the instructions on the package or in the instructions for use of the sprayer. Of course, if you don't.

for spray gun

The quality of the work itself largely depends on ensuring the necessary viscosity of the working material. It should be understood that in fact it largely depends on environmental factors such as temperature and humidity. The information on the manufacturer's jar is just an average value for normal temperature conditions, for example, 20 degrees.

Of course, in practice, rarely anyone waits for the temperature to reach 20 degrees in the working room, so the paint material is usually diluted empirically. At lower temperatures, the paint thickens; at hotter temperatures, it becomes thinner.

How to dilute paint for an electric spray gun

Remember that a certain amount of spray composition is poured into the spray tank. After that, a small test area is painted with the tool, while it is necessary to carefully check the quality of the spray: the paint must evenly pass through the nozzle, finely sprayed with an air stream.

403 Forbidden

nginx

If the liquid is sprayed in large drops or perhaps not sprayed at all, you need to add 5% of the appropriate (recommended by the paint and remote control manufacturer) solvent to the tank, naturally mixing the whole mixture thoroughly. This is how the paint for the spray gun is diluted in the usual case.

Then you need to check the quality of spraying the resulting mixture and continue to improve the composition by adding 5% solvent until the jet becomes uniform and constant. Ideally, you should get a directional "fog". Professionals say that without loss of quality, compositions on organic solvents are allowed to be diluted a little more than half. But water-based formulations tolerate a dilution of no more than 10% pure water. The owners are well aware of this.

When diluting the composition, it is important not to overdo it. An excess of solvent leads to a decrease in film thickness, which means a decrease in the operational strength characteristics of the coating. It happens that the same paint, when sprayed, gave a surprisingly beautiful first layer, and the second layer began to lay down with shagreen and did not stretch into a beautiful smooth surface.

This means that the paint has thickened in these 15-20 minutes. Therefore, before applying the second layer, it is necessary to check the viscosity of the composition in a test area and make adjustments.

To help the home master: how to dilute the paint for the spray gun

Painting a car is not easy. This process requires many operations. How to dilute paint for an airbrush is one of the issues that need to be addressed. Almost every car owner knows that paint should be thinned with a thinner. But how to do it correctly, to what consistency the composition is brought, is a mystery to many. This is what we'll talk about today.

How to thin paint

After preparing the car body for painting, microcracks remain on its colorful composition. New paint should fill them in. To do this, it needs to give a certain density and viscosity. How to dilute the paint? Let's consider its composition. Each mixture for painting cars consists of the following basic components:

• pigment;
• binding base;
• solvent.

The pigment is a powder. It gives color to the composition. The binder base of the coloring composition holds the pigment and provides adhesion to the painted surface. The solvent in different quantities gives the composition the desired consistency. Different types of coloring compositions have different density, hardness, elasticity. According to these characteristics, paints can be divided into the following types:

• acrylic;
• alkyd;
• melamine alkyd.

Alkyd coloring mixtures are made on the basis of an oily substance - alkyd resin. Resin refers to one-component materials. After the paint has dried, it needs to be varnished. Any alkyd composition dries at room temperature. Its benefits include:

• low cost;
• very fast drying;
• color retention when exposed to sunlight.

Melamine alkyd enamels are very often used when carrying out painting work using paint sprayers. They paint cars with an airbrush in special boxes. Such enamel dries in special chambers at a temperature of 120-130°C. It also has some advantages, the main of which is the abundance of flowers. Enamel can be purchased mother-of-pearl and with a metallic effect, you can buy matte paint. The disadvantage of this car enamel is that it cannot be used in an ordinary garage. The second drawback is the high consumption, since it is applied in three layers.

Manufacturers add some solvent to car paint. This is done so that it does not dry out during storage. Before painting the car, the enamel is diluted to the desired density and viscosity. How to dilute - depends on the conditions of painting. The paint polymerizes only when the solvent is completely evaporated, which can be:

• fast;
• slow;
• universal.

Fast solvent is applied in conditions of rather low temperatures. Slow is designed to dilute paint that is used at elevated temperatures. For paint drying at room temperature, universal solvents are suitable.

Solvents can be:

• polar;
• nonpolar.

403 Forbidden

403 Forbidden

nginx

They differ from each other in chemical composition. Polar solvents contain ketones and alcohols. Non-polar - kerosene and white spirit. If the coloring composition has a polar component, it will definitely reject a non-polar solvent. Non-polar mixtures react in the same way to a polar solvent. Non-polar solvents are usually included in the composition of acrylic and water-based paints. Universal solvent is able to interact with any paints.

Examples of Specific Solvents

The most common compositions for diluting paints are as follows:

• № 646;
• № 647;
• № 650;
• White Spirit.

No. 646 is a polar solvent. The substance is quite aggressive. It is often used to wash spray guns after work. It is not used to dilute paints. Suitable only for diluting acrylic mixtures.

No. 647 - still from the category of polar ones. It is widely used when working with nitro-varnishes and the same coloring compositions.

Polar Solvent No. 650 can be used on a wide range of materials. It is quite versatile, it can dilute almost any paint when painting with an airbrush.

P-4 (polar) - used only with alkyd enamels. It is incompatible with other dyes.

White spirit is the only non-polar substance in this list for dissolving oil and alkyd enamels.

To dilute the paint composition, a percentage is usually used. Most often, you need to pour 50-60% of the solvent into the working composition, mix well. Sprayers of any type can work on such a mixture. An airbrush is usually used to paint surfaces of a large area, a small spray gun is used to apply small strokes and drawings. If the proportion that is written on the package is violated, the paint will either not paint over small cracks, or it will leak heavily. Therefore, it is not worth violating the factory recommendations.

How to check the finished composition for viscosity

Viscosity can be checked with an instrument called a viscometer. It costs from 1 to 3 thousand rubles. This is a small container with a hole having a diameter of 2.6 or 8 mm. But more often they use a DIN-4 viscometer. Its hole has an average size of 4 mm. The test must be carried out at an air and mixture temperature of about 20°C. The device is filled with paint, which flows out through the hole. The measurement is made using a stopwatch. The norm for acrylic compositions is 19-20 seconds. For alkyd or melamine alkyd enamel - from 15 to 17 seconds. Various primers should have a viscosity of 20-21 seconds. Oil paints - 20-22 seconds.

Painting a car with an airbrush will be correct and even with a viscosity of 18-20 seconds. If it is higher than these values, it should be diluted again so that the paint has the desired consistency. If a one-component formulation is being diluted, only the solvent is added. In a two-component, first add and dissolve the hardener, then the solvent itself. The prepared mixture should be filtered before pouring into the paint sprayer so that dust particles that have entered the solution do not clog the nozzle of the device and do not fall on the surface to be painted. Then the result will be good.

403 Forbidden

403 Forbidden

nginx

Consumption of materials when painting with an airbrush

When painting a car body, the consumption of materials depends on such factors:

• surface dimensions;
• number of paint layers;
• material colors;
• viscosity;
• match the color of the dye and primer;
• spray gun features.

The average consumption in milliliters is as follows:

• door or wing - 150-200;
• bumper - 200-250;
• hood - 500-600;
• 1 m² - 250-300.

Conclusion on the topic

In order to obtain an even and high-quality coating when painting surfaces, it is necessary to dilute the coloring composition of any type to the required consistency. This is done in accordance with the factory instructions. Thick paint will not hide microcracks and will give various surface defects after drying. A highly diluted composition will flow and dry poorly. Only when the mixture is diluted to the correct viscosity can any surface be painted with quality.

When working with a spray gun, certain requirements must be met. The room must be properly ventilated. If work is carried out outdoors, the weather should be dry and calm. The ambient temperature is from 15 to 30°C. When painting cars, it is recommended to use a respirator. Vehicles must not be painted with water-based paint.

There are no related posts.

Click " Like» and get the best posts on Facebook!