Recovery of the paint coating of the car is a process that requires not only a high-quality tool, but also the right chemistry. Among the many funds available on the market, it stands alone. polishing paste 3M number 17, which has proven itself as a reliable abrasive for the primary processing of the body. This composition is designed to remove deep scratches, drawings from sandpaper and the effects of paint oxidation, returning the surface to its original shine.
Many motorists and professional decorators choose this product of the series. Perfect-it For its predictable result and cost-effectiveness. Unlike finishing lineups, which only hide small defects, the No. 17 abrasive works with depth, effectively removing micron for micron the damaged layer of lacquer. However, like any powerful tool, it requires a clear understanding of the application technology to avoid damaging the vehicle.
In this article, we will analyze in detail the technical characteristics of the composition, consider the step-by-step algorithm of work and answer frequent questions that arise when using this abrasive. You will learn how to properly prepare the surface, which machine to choose and what you absolutely cannot do in the polishing process to get the perfect result.
Characteristics and features of the composition of 3M No. 17
Abrasive paste 3M number 17 belongs to the category of rough and medium-abrasive materials designed to work with hard varnishes. Its formula is designed to provide aggressive removal of defects, while minimizing the formation of holograms in the final stage. Granulometry This product is selected specifically for working with polishing circles of hard foam or wool.
One of the key features is low dust and long working time before drying. This allows the master to process a sufficiently large area of the body, without fear that the composition will dry on the circle and stop working. In addition, the paste is easily removed from the surface after completion of work, which greatly speeds up the final cleaning process.
⚠️ Note: Pasta 3M #17 is not a finishing line. After its application, the body almost always remains micro-risks (haz), which must be removed with softer compositions (for example, 3M No. 05973 or No. 05974) to achieve mirror shine.
It is important to note the compatibility of the material with different types of LCP. It works effectively on both factory enamels and repainted elements, provided that the layer of lacquer is sufficiently thick. The product is especially effective when working with hard varnishes HS (High Solid), which are difficult to process with less aggressive means.
Preparation for polishing: tools and conditions
The quality of the result depends on the preparation of the workplace and tools. Before the start of work, the car should be thoroughly washed and cleaned of bitumen stains and metal inclusions. Use of the clay or cleaning wipes before polishing is a must, as getting solids under the polishing circle can lead to deep scratches.
To work with paste 3M number 17, it is recommended to use a polishing machine with speed adjustment. The optimal speed range for primary processing is between 1500 and 2000 rpm, depending on the hardness of the varnish and the type of polisher. Too high speeds can lead to overheating of the surface and "lighting" the paint.
☑️ Checklist for polishing preparation
It is also necessary to take care of the protection of plastic elements. Abrasive paste caught on black unpainted plastic or rubber seals can leave white hard-to-remove marks. Therefore, all adjacent areas should be pasted with paint tape or previously protected with special compositions.
Application and polishing technology
The polishing process begins with applying a small amount of paste to a polishing circle. Do not squeeze the composition at once on the whole car or make too large "tracks" around the perimeter of the circle. It is enough to have 3-4 peas with a diameter of about 5-7 mm for processing one part, for example, a door or wing.
The movements of the machine should be cross, with a small pressing. In the first stage, while the paste works as efficiently as possible, you can use a stronger press to remove the main layer of defects. As the composition is distributed and the pressure begins to dry, the pressure should be eased, moving to the final treatment of the site.
| Parameter | Recommended value | Note |
|---|---|---|
| Type of circle | Hard foam/Wool | Diameter 125-150 mm |
| Turnover (start) | 1000-1200 rpm | For pasta distribution |
| Turnover (work) | 1600-2000 rpm | The main stage of risk removal |
| Speed of passage | 30-40 cm/sec | Uniform motion |
It is important to control the surface temperature. If the varnish becomes hot to the touch, it is necessary to stop polishing this area and let it cool. Overheating can lead to softening of the varnish, which will make it "plastic" and make further work difficult, and can also cause detachment of the coating.
The secret of working with solid varnishes
For very hard varnishes, professionals sometimes slightly spray the polishing circle with spray water before applying the paste. This helps activate the abrasive and reduces friction, but requires high qualifications to avoid splashing the composition.
Residue removal and result monitoring
After passing all sections of the body paste 3M number 17, the stage of removing the residues begins. For this purpose, clean microfiber towels are used. It is important to change or shake out towels frequently, as accumulated abrasives can scratch the newly polished surface again.
Monitoring the result is best carried out with good side lighting. Use an LED lamp or sunlight to see if you have managed to remove the deep risks. If defects remain, the procedure can be repeated, but if the risk has decreased, but has become more frequent (there was a "small ripple"), then it is time to move to the next, less abrasive step of polishing.
Cleaning the polishing circles It also plays an important role. Clogged with paste surface of the circle loses its effectiveness and begins to warm the varnish. Clean the circle regularly with a special brush or simply blow with compressed air in between parts.
Comparison with analogues and place in the 3M system
In the lineup 3M Perfect-it Paste No. 17 occupies a niche of universal "working" material. It is less aggressive than pasta No. 09374 (which often comes with a blue cap and requires more careful handling), but more effective than finishing No. 05973 (green cap) or No. 05974 (black cap).
Compared to competitors like Menzerna or Koch Chemie, the 3M number 17 often wins in affordability and ease of use. It is less prone to splashing ("throwing") of neighboring body elements, which is especially important when working in a garage or on the road.
⚠️ Note: Do not mix pastes from different manufacturers on the same lap. Chemical components can react, resulting in unpredictable results or a rapid failure of the circuit.
Choosing between different numbers pastes, always proceed from the state of the body. If the car has never been polished and has a matte shade, it is worth starting with the 17th number or its analogues. For regular refreshment of the car, when there are no deep scratches, this composition will be unnecessarily aggressive.
Use different polishing circles for different colors of cars. White circle for light cars, black or gray for dark ones. This will help to avoid pigment transfer and microscraps.
Typical errors and security measures
One of the most common mistakes is to try to polish the entire car in one circle without cleaning. Abrasive particles eventually break down and lose their cutting properties, turning into a lubricant that only gloss, but does not heal. In addition, the dirty circle creates vortices and holograms.
Safety in the use of power tools and chemistry is the number one priority. The polishing machine creates a cloud of fine dust that can be harmful to the airways. Respirator and safety glasses are mandatory, especially in enclosed spaces.
It is also worth remembering the risk of rubbing the varnish to the ground. This is especially true on the sharp edges of the body (door ribs, hood, trunk lid). In these places, the layer of lacquer is always thinner, and the aggressive paste 3M #17 can remove it in seconds.
The main rule of polishing: it is better to make several passes with less pressure than one pass with excessive effort, risking damage to the LCP.
Frequently Asked Questions (FAQ)
Can I use 3M number 17 by hand without a typewriter?
This is theoretically possible, but it is extremely ineffective. The Perfect-it series of abrasives are designed to operate at high speeds where components are heated and activated. Manually, you will not be able to achieve the necessary pressure and speed to remove deep scratches, but only spend a lot of time and effort.
How often should I change the polishing circle when using this paste?
The circle does not require frequent replacement if you care for it. It is enough to clean it with a brush after each detail. Replacement is required when the foam begins to crumble, the shape is lost (the circle becomes oval), or it is clogged so much that cleaning does not help restore cutting properties.
Will this paste be suitable for polishing headlights?
Yes, 3M No. 17 paste is great for restoring the transparency of polycarbonate headlights if they have deep scratches or yellowness. However, after it, you must use the finish line and apply a protective layer (varnish or ceramic), since the plastic will remain unprotected.
What to do if the paste is caught on black plastic?
Don’t rub with a dry cloth, you’ll only rub the abrasive deeper. Carefully remove the bulk of the paste, then use a special plastic cleaner or a versatile cleaner (like 3M Universal Cleaner) with a soft brush to wash white marks from the pores.
Shelf life
3M sealed paste is stored for up to 3 years. After opening, the service life is reduced to 12 months, provided that the lid is tightly closed and stored in a cool place. Dried paste cannot be used.