The appearance of holograms and circular varnishes immediately after working with a typewriter is the most frequent and painful result of a beginnerβs mistake, who hastened with the choice of rotation speed or incorrectly selected the abrasiveness of the polishing paste. Ignoring careful surface preparation and trying to immediately start processing with an aggressive composition often leads to the fact that instead of mirror shine, the owner receives a spoiled coating that requires expensive repainting or removing an excess layer of varnish.
So car-polishing It is necessary to strictly observe the technology, where each stage, from washing to applying protective wax, is critical. In this guide, we will discuss how to avoid typical mistakes, what tools are really needed to start and how to turn a matte, time-scratched body into a perfect mirror with your own hands.
Assessment of the LCP status and choice of strategy
Before you grab the polishing machine, it is necessary to conduct a detailed diagnosis of the condition of the paint coating (LCP). Car polishing - is the process of removing the micron layer of varnish, and if you overdo it, you can wipe the coating to the ground or paint, which will be a fatal mistake. Visually inspect the body in bright daylight or under a powerful LED lamp to reveal the depth of defects.
There are several types of damage that require a different approach. Small scratches that do not cling to the nail are usually removed with a light abrasive polish. The deep risks that a nail falls into often require pre-painting or peaceful acceptance of the fact that it will not be possible to completely remove them without repainting. It is also important to assess the thickness of the varnish with a thickness meter to understand the margin of coating strength.
β οΈ Warning: If the thickness of the varnish is less than 40-50 microns, aggressive polishing is strictly prohibited, since there is a high risk of rubbing the coating to metal.
Different body areas may require different strategies. The hood and roof exposed to maximum sun and sand often have a thinner lacquer and require a gentle regime. At the same time, the lower parts of doors and sills can be contaminated with bitumen and require chemical pre-treatment before machining.
Required tool and supplies
Quality polishing the car with their own hands It is impossible without properly selected tools. Attempting to use a drill or screwdriver with homemade nozzles is a guaranteed way to spoil the body due to unstable turns and the beating of the cartridge. For beginners, the best choice will be an eccentric (orbital) machine, which is safer than a rotary and less likely to leave holograms.
The basic set of polisher should include:
- π οΈ Polishing machine (eccentric with a stroke of 15 mm for beginners).
- π§½ Polishing circles (pour of different rigidity: white, orange, black).
- π§΄ Abrasive pastes (rough, medium, finish) and polyrene-wax.
- π¦ Powerful light source for monitoring the result (LED lamp).
- π§€ High quality microfibre to remove paste residues.
The choice of pasta depends on the state of the varnish and the stage of work. Rough compositions with a large abrasive are used for the primary removal of scratches, but they leave a mattage. Medium pastes remove matte after rough processing, and finishing give a deep gloss. Use of the 3M or Koch Chemie As a starter brand, it often produces predictable results.
Secrets of choosing circles
The foam circles are divided by colors. Yellow and orange are tough, to remove scratches. White and blue are soft, for finishing and waxing. Black circles are usually the softest and are only used for applying protective compounds or working on soft varnishes.
Body preparation: washing and degreasing
Anybody. body-polishing It starts with a perfect surface cleanliness. The grain of sand that falls under the polishing circle will instantly turn into a deep scratch, crossing out all previous work. Therefore, the preparation process takes up to 40% of the total time spent on restoring shine.
First, the car is thoroughly washed using a high lubricant shampoo to minimize dirt contact with varnish. After washing, it is necessary to remove all the sticky contaminants that are not washed away with water: bitumen stains, insect marks, metal dust and tar. For this purpose, special chemical cleaners are used that dissolve pollution.
The cleaning process is as follows:
- Applying a bitumen cleaner to the lower parts of the body and contaminated areas.
- Exposure of the product (usually 2-5 minutes) before dissolving the spots.
- Careful removal of softened dirt with a soft microfiber.
- Use of clay (clay bar) to remove interspersed metal and roughness.
After mechanical and chemical cleaning, the surface must be degreased. This will remove the residues of silicones, old polishes and oils that can interfere with the work of the paste. The degreaser is applied to a napkin and wiped over the body, after which the surface should become absolutely matte and clean to the touch.
Technology of polishing: step-by-step instructions
The main stage for which everything was started is the immediate polishing. It is important to follow the rule: βless is moreβ. Do not apply too much paste to the circle, otherwise it will fly, soiling neighboring parts, and reduce the efficiency of the abrasive.
Start with a small area, about 50x50 cm. Apply the paste pea on a circle, spread it over the surface on the switched off machine at low speeds, and then start polishing. Movements should be slow, overlapping each other (about 50% of the blockage). Do not press hard on the machine, the weight of the tool and the head already create the necessary pressing.
β οΈ Warning: Do not hold the working machine in one place for longer than 2-3 seconds, so as not to overheat the varnish. Overheating can lead to its clouding or even boiling.
To better understand the process, consider the parameters of work for different stages:
| Phase | Type of pasta | Speed (rpm) | Pressure. |
|---|---|---|---|
| Reconstructive | Rough (Cut) | 1200 - 1500 | Average. |
| Basic | Middle (Polish) | 1000 - 1200 | Lung |
| Finished | Thin (Finish) | 800 - 1000 | Minimum |
| Protection | Wax/hermetic | 600 - 800 | Minimum |
After passing the area, the paste must be removed immediately with a clean microfiber and check the result. If the scratches remain, the procedure is repeated. You can move to the next section only after the current one is completely completed.
βοΈ Checklist before the start of the machine
Working with hard-to-reach places and ribs
Car polishing complicated by the presence of numerous moldings, handles, grilles and sharp edges. The polishing circle should not touch plastic elements, rubber bands and sharp faces of the metal, as this will lead to their melting or erasing the paint on the ribs. On sharp edges, the varnish is always thinner, and the risk of rubbing it to metal is maximum.To treat the areas around the handles and moldings, use the technique of "retract". Bring the working machine to the obstacle and take it away without stopping at the edge. In difficult places where the circle does not pass, use special small polishers or do this part of the work manually using microfiber and a small amount of paste.
Useful advice: Glue paint tape all plastic, rubber and chrome elements, as well as sharp edges of the body before the start of work. This will save them from damage and make it easier to clean the paste at the end.
Pay special attention to the racks of the windshield and the places of adjoining bumpers. Often there accumulates paste, which, drying, looks like a white coating. Carefully clean these joints with a soft brush while working.
Finishing and protection of the result
After all the scratches are removed and the body shines, the stage of fixing the result comes. Finishing polish and application of the protective composition is a mandatory step, since after abrasive exposure, the varnish remains open to an aggressive environment. Without protection, the new gloss can disappear through a couple of sinks.
For protection, you can use carnauba wax, synthetic sealant or ceramic coating. Wax gives a deep "wet" shine, but does not live long (3-5 weeks). Ceramics provide hardness and hydrophobic for 6 months to a year, but require more complex application and drying conditions.
The choice of protective composition depends on the operating conditions:
- π§οΈ For a rainy climate, compositions with a high hydrophobic effect are ideal.
- βοΈ In hot regions, UV protection is important to prevent pigment burnout.
- ποΈ In the city with reagents, chemically resistant synthetic sealants work better.
Apply protection strictly according to the manufacturer's instructions, observing the polymerization time. It is often necessary to wait a certain time before the first wash (usually from 12 to 24 hours).
Main conclusion: Pollination is not a one-time promotion, but part of regular care. Proper washing and timely updating of the protective layer will prolong the life of polishing several times.
Common Mistakes and How to Avoid Them
Even following the instructions, beginners often step on the same rake. The most common mistake is using dirty circles. The dried paste on the pore turns into abrasive lumps that scratch the newly polished surface. Change the circles often or wash them with water and drying after every 2-3 square meter.
Another problem is working on dry land. Some pastes require dry varnish work, others (water) may require moisturization. Always read the instructions on the bottle. polishing. The work of dried paste is not only inefficient, but also dangerous for the varnish due to increased friction.
β οΈ Warning: Never polish in direct sunlight or on a hot body. Heating the surface will accelerate the drying of the paste and can lead to an uneven result and the appearance of spots.
Ignoring the intermediate cleaning also leads to marriage. Use compressed air or a special brush to blow dust out of the pores of the polisher. If you feel that the machine has started to growl or vibrate stronger than usual, most likely, the circle is clogged and requires replacement or cleaning.
How often can you polish your car?
Abrasive polishing with removal of the layer of varnish is not recommended to do more than once every 1-2 years, depending on the condition of the machine. Too frequent deep polishing thins the varnish. Supportive polishing with soft compositions (one-step) can be done more often, as small defects appear.
Can I polish my car in the garage?
Yes, you can, but it is critical to provide good lighting. In the dark, you wonβt see scratches or holograms. Good ventilation is also necessary, as dust from paste and evaporation can be harmful to breathing, and in a confined space with a sparkling tool (if it is not spark-safe) a risk is theoretically possible, although for polishing this is less relevant than for welding.
What to do if there are holograms?
Holograms (circular divorces) appear from using a too rough circle, high speed, or dirty paste. They are removed by re-polishing a softer circle and finishing paste at low revs. Sometimes it helps just a thorough cleaning of the surface and a repeated passage "finish".
Do I need to wash my car after polishing?
Immediately after polishing, you do not need to wash the car with water, since you have just cleaned the body. However, microfiber paste residues must be carefully removed. If you have applied a protective compound (wax or ceramics), follow the instructions to it - some require exposure, others - washing off after a certain time.