The number of marks removed depends on the existing safe levels of paint and which paint correction service is chosen.
Basically, the technique removes microscopic amounts of the surface in order to smooth away problems. It could be likened to ultra fine sanding but when we talk about microscopic we are referring to a few microns (a micron is 1/1000th of a millimeter)!
A combination of cleansers and polishes of various grades are applied to a car's paint using specifically designed buffing pads (there are many grades and types available) and either rotary or dual action polishers. Each stage is meticulously controlled and vigorously reinspected using specialist lamps and paint depth gauges.
As you can probably tell, to be able to do the job properly requires being able to judge the existing condition of your car's paint and foresee likely issues before starting work. This requires not only the use of the right equipment, but also years of experience and an understanding of the many different paint systems used on cars.
Machine polishing is also suitable for paint on older or classic cars which may not include a clear coat.
How Does Machine Polishing Work?
This simple diagram illustrates the typical make up of modern car paint where the topmost clear coat layer contains a number of marks or scratches.
The green line provides an example of where the clear coat may be reduced to following polishing. As illustrated, some marks will have been completely removed while others will have been made much smaller and are likely to be harder to see.