His English name is Dual actions, or DA machine for short. Some people call it an eccentric machine or a shaking machine.
This machine rotates randomly, and the trajectory is an irregular ellipse.
This machine is divided into 15mm and 21mm, and there are other models, but these two models are the most popular models on the market.
In addition to the difference between the backplane and the eccentric block of 15mm and 21mm, both domestic and foreign have serious selection difficulties. Comprehensive tests basically confirm that the cutting capabilities of the two polishing machines are basically the same. In theory, 21mm has a larger cutting ability than 15mm. , But after the editor chooses to use 2000 grit sandpaper to test, it is concluded that 21mm is better than 15mm in both cutting ability and efficiency.
The advantages of the eccentric machine: high safety, no glare after polishing, and the surface temperature of the car paint after polishing is warm, it will not be as hot as the car paint surface after polishing by a straight machine. Driver, choosing the eccentric machine is your must-have polishing artifact! And the mirror effect is better than the RO machine.
Disadvantages of eccentric machine: low efficiency, the eccentric machine cannot be removed for deep scratches.