A small chip on the hood or a scratch on the bumper from a bush branch instantly destroy the ideal picture of a tidy car, and ignoring these defects often leads to the appearance of rust after a couple of months. Local paint. spray-can is the only available way to quickly restore the integrity of the paint coating (LCP) without contacting an expensive service, where for such a volume of work can take an amount incommensurable with the size of the damage. Proper execution of all stages, from degreasing to final polishing, allows you to achieve a result that visually does not differ from the factory coating, if you observe the temperature regime and the technology of layering.
The recovery process requires not so much artistic talent as patience and strict adherence to the sequence of operations, since it is the haste that most often causes leaks or shaking. Before you start working, you need to make sure that you have all the necessary materials: in addition to the enamel itself in the can, you will need a degreasing agent, abrasive different grains, soil and varnish. The quality of the final result directly depends on the preparation of the surface, so saving on preparatory work is categorically unacceptable, otherwise the paint may swell or peel off in the near future.
The first stage of work begins with a thorough washing and cleaning of the damaged area, as any dust or greasy spot will become the centers of detachment of the material.
If corrosion foci have already appeared on the metal, they must be completely removed by mechanical means, cleaning the rust to pure metal with sandpaper or a rust converter.
After mechanical cleaning, the surface should be treated. degreaser (e.g., White Spirit or a specialized antisilicone to remove residues of oils and dust that are not visible to the eye.
It is important not to touch the prepared surface with your hands, since skin fat will instantly worsen the adhesion of the soil and paint, reducing all efforts to nothing.
⚠️ Warning: Never apply paint to a wet or insufficiently dried surface, as trapped moisture will cause blistering and clouding of the varnish during the drying process.
Color selection and preparation of materials
The critical point is the exact shade-up paint, as even a slight deviation in tone will be noticeable in contrast with the main body of the car.
To find the desired color code, you need to look into the technical documentation or find a factory plate, which is usually located in the doorway, under the hood or in the trunk, where the code in the format is indicated. LY7C Or something like that.
When buying a can, make sure that the manufacturer guarantees compliance with factory codes, and it is best to order paint mixing at a specialized point where enamel will be picked up on a computer, taking into account the burnout of your body.
You will need to purchase additionally. slurry in aerosol, if the damage has reached the metal, as well as car varnish to create a glossy protective layer on top of the paint.
- 🎨 The exact paint code ensures the imperceptibility of the transition between the repaired area and the main coating.
- 💧 The solvent 646 or 647 is required for washing the spray spout and degreasing tools.
- 🧤 Nitrile gloves will protect the hands from chemistry and prevent fat from entering the body.
- 🌡️ The ambient temperature must be at least 15°C for the correct polymerization of materials.
Before starting work, the spray with paint must be intensely shaken for 2-3 minutes so that the metal ball inside lifts the pigment sediment from the bottom.
If you use soil and varnish, they should also be preheated to room temperature, as the cold material will fall worse and can give surface defects.
Check availability sprayer (torch) on the can: it should give a flat cloud, and not spit drops, which often happens with poor-quality products.
Grinding and grounding technology
Proper surface preparation involves creating a smooth transition (stewing) between the edges of the damage and the whole varnish, so that after painting, the step is not visible.
Use sandpaper with graininess P320-P400 for primary cleaning of rust and old soil, carefully expanding the boundaries of damage.
Then move on to a smaller grain. P600-P800to rub the edges of the chip and make the transition as gentle as possible, almost imperceptible finger.
After grinding again thoroughly degrease the surface and wait for the solvent to dry completely before applying the soil.
☑️ Checklist for surface preparation
Printing is a mandatory step if the metal is damaged, as the soil provides paint adhesion and anticorrosion protection.
Apply the soil in thin layers from a distance of 20-25 cm, giving each layer to dry for 10-15 minutes to avoid the formation of leaks.
After drying the soil, it also needs to be slightly pasted with paper. P800-P1000 "Wet" to remove the shaking and make the surface smooth.
The final degreasing of the ground surface completes the preparatory stage before applying the colored layer.
⚠️ Note: Do not overdo the thickness of the soil layer, as too thick a layer can shrink or swell when applying hot spray paint.
The spray paint process
The most important moment is the application base-enamelIt requires a firm hand and a rhythm of movement.
Hold the spray strictly perpendicular to the surface at a distance of 20-30 cm and start spraying outside the repair area, smoothly conducting your hand along the part.
The first layer should be thin, almost transparent (dust), its task is to create a basis for the adhesion of subsequent layers, and not to block the color.
Between the layers, it is necessary to maintain a pause of 10-15 minutes (the time of interlayer drying) so that the solvent has time to evaporate, otherwise the paint can boil.
The second and third layers are applied more saturatedly, trying to evenly cover the primed area with a small capture of the healthy zone.
Avoid long delay of the spray at one point, as this is guaranteed to lead to the formation of a hard-to-remove leak.
If you accidentally made a mistake and the paint flowed, do not try to wipe it immediately - let it dry completely, then gently shave and close again.
The number of layers depends on the cover of the paint and color, but usually 2-3 dense layers are enough to completely cover the ground.
Lacquering and gloss-making
After drying the base paint (usually takes 20-30 minutes, but it is better to wait longer) the surface should be covered with car varnish.
Lacquer protects the pigment from burnout and mechanical effects, and also gives the coating depth and characteristic color. glare.
The technique of applying varnish is similar to painting: the first layer is thin, the subsequent layer is more wet, but without fanaticism to prevent drainage.
Usually enough 2 layers of varnish, and the second layer can be made a little more greasy for perfect bottling.
| Parameter | Recommendation | Critical error |
|---|---|---|
| Distance to the surface | 20-25 cm | Closer than 15 cm (there will be leaks) |
| Balloon temperature | 20-25°C | Cold balloon (bad spray) |
| Drying time between layers | 10-15 minutes. | Drying less than 5 minutes (boiling) |
| Number of layers of lacquer | 2 layers | 1 layer (small depth) |
If there is a shashashare on the varnish (the effect of orange peel), do not panic - this is a normal phenomenon that is eliminated by subsequent polishing.
The main thing is to prevent dust from getting on fresh varnish, so it is better to work in a closed, pre-cleaned room or garage.
The secret to perfect bottling of lacquer
To get a smoother varnish, add 5-10% of a special varnish diluent to it (if it is in a separate jar), but for aerosols this is not possible, so control the spraying distance.
Pollination and defect removal
The final stage, turning a matte or grainy surface into a mirror, requires the use of a mirror. polishing and a polishing machine.
You can start polishing only after the varnish is completely dryed, ideally 24 hours after painting, so that the material gains hardness.
Start with abrasive paste (grain 1000-1500), carefully removing shaking and small irregularities, trying not to wipe the varnish to paint.
Then use a less abrasive paste to remove the risk from the first polish and give it a shine.
- 🌀 The polishing machine should work at low revs (up to 1000 rpm) in order to avoid overheating of the varnish.
- 💧 Constantly wet the surface with water when working with abrasives, so as not to overheat the coating.
- ✨ The final polyrene-anthologram will remove the micro-vortexes and give a deep shine.
In hard-to-reach places where the machine can not get close, use a manual method of polishing with a microfiber or a special applicator.
After polishing, the surface will become smooth, the boundary of the transition will disappear, and the repaired section will merge with the main body.
If the result of the first polishing does not satisfy, the procedure can be repeated, but with caution controlling the thickness of the remaining polish.
⚠️ Note: Do not use polishing circles with hard pile on fresh varnish, as you can leave deep scratches that will have to be removed for a long time.
Tip: To check the quality of polishing, use the side light of the lamp - it will show all remaining defects that are invisible in direct light.
Common Mistakes and How to Avoid Them
Even with the instructions, beginners often make mistakes that negate all work and require rework.
One of the most common problems is applying paint to a dirty surface, which leads to detachment "stocking" after a while.
Also a common mistake is to ignore the temperature regime: painting in the cold or under the scorching sun is guaranteed to give defects.
Insufficient shake of the can will lead to the fact that only a solvent without pigment will lie on the machine, and the color will not appear.
- 🚫 The absence of soil on the metal will cause rapid corrosion under the paint.
- 🚫 Too thick a layer of paint will lead to long drying times and the risk of wrinkling.
- 🚫 Using dirty wipes for degreasing will smear the dirt on the surface.
To avoid shaking, keep the can at the right distance and don’t try to paint everything over once.
If you are in doubt, work out first on an old metal part or a piece of iron.
Remember that Quality training takes 80% of the time of the workThe painting itself is just the final touch.
The main conclusion: The success of local painting depends not on the cost of the can, but on the thoroughness of surface preparation and compliance with pauses for drying between layers.
Can I paint my car in the winter on the street?
It's not recommended. The optimal temperature for painting is from +15 ° C to +25 ° C. At low temperatures, the paint does not lie down well, does not spread, dries for too long and can be covered with matte plaque (blushiness) due to condensation of moisture. In winter, you can paint only in a heated room.
How much dried paint from the spray before polishing?
The surface drying time is 30-60 minutes, but complete polymerization (curing) takes 24 hours to a week. You can polish the varnish after 24 hours, but it is better to wait a day to be sure of the hardness of the coating.
Do I need to remove the part from the painting machine?
Not necessarily if the damage is local. However, removing the part (bumper, mirror, door) allows you to get close to the edges of the damage from all sides and avoid getting paint on neighboring elements, which simplifies the work and improves the result.
What to do if the paint is leaking?
Don't try to wipe the flow right away! Let the paint dry completely (better to leave for a day). Then gently grind the flow with a blade or fine sandpaper (P1000-P1500) in level with the surface, polish and apply a corrective layer of lacquer.