Manual for Dual Action polishing

What is Dual Action polishing and what products do I need for it? In this article you can read all about Dual Action polishing and about the necessary materials. In addition, we give you a step-by-step plan to get started right away!

What is Dual Action polishing?

Dual Action polishing, also called eccentric polishing, is the most common way to polish surfaces.

A Dual Action polisher offers two distinct polishing actions: a spinning or rotating action (the tool spins a pad in a circle) and a oscillating action (the tool spins a pad in an off-centre or random circular motion). This is called an eccentric stroke or, because of the double motion, Dual Action. Two major advantages of eccentric polishing are its easy operation and low heat generation. So you don't have to be an experienced polisher and you don't have to be afraid of damaging the paint due to the heat.

Benefits of eccentric polishing (Dual Action)

  • Simple, you don't need any experience.
  • Generates little heat, so it's safe on any paint.
  • Does not create holograms.

What is the difference between Dual Action polishing and rotary polishing?

Dual Action polishing is a different technique than rotary polishing. The biggest advantage of Dual Action polishing is that anyone can polish without leaving holograms. Holograms are circular scratches caused by careless or improper machine polishing.

Dual Action polishing is basically a little slower than rotary polishing but because you only have to follow 2 steps (instead of 3 steps), the end result is achieved just as quickly. With Dual Action polishing there is less risk of "polishing through" outside corners, burning through the paint or other defects. This makes Dual Action polishing perfect for the professional who wants the highest quality. Moreover, even the beginner can easily get by with this system due to the low risk.

Dual Action polishing Rotary polishing
DA polishing is slower Rotary polishing is faster
Less risk of removing the coat entirely and burning through the paint Faster build-up of heat and friction
More refined finish without hazing Often leaves hazing
2 steps (can often be done in 1 step) 2-3 steps

What do you need for Dual Action polishing?

For professional polishing results, Dual Action polishing requires different polishers, pads and polishing pastes than rotary polishing. See suitable products for Dual Action polishing.

Dual Action polishers

The following polishers are suitable for polishing using the Dual Action technique. These eccentrically rotating polishers are also known as Dual Action polishers. We supply these polishers as a deluxe polishing set. So you receive not only the polishing machine but also the right polishing paste, polishing pads, polishing cloths and a sturdy bag to store the machine in!

  • Rupes Bigfoot LHR75E/LUX polisher (set)
    Mini polisher with a diameter of 75 mm. The compact size makes this machine very suitable for polishing small surfaces. The Rupes LHR75E features adjustable speed and ergonomic design with non-slip parts. The perfect Dual Action polisher for small surfaces and hard to reach areas!

  • Rupes Bigfoot LHR15ES/LUX polisher (set)
    Bigfoot polisher with a 125 mm support pad. Like the other Bigfoot machines, this eccentric rotary polisher is comfortable to use due to its ergonomic design, light weight and adjustable speed. Rupes LHR15ES is suitable for polishing large surfaces. Think of cars, boats or caravans.

  • Rupes Bigfoot LHRE/LUX polisher (set)
    This is the latest and most powerful polisher from Rupes. With a support pad of 150 mm (diameter), this Dual Action polisher is perfect for quickly polishing large surfaces. With the electronic pedal you regulate the speed so you are always in control of the machine. Due to the eccentrically rotating movements, the machine leaves no holograms on the surface.

Polishing pads

Using the right polishing pads is necessary for Dual Action polishing. In fact, polishing pads for Dual Action differ from pads for rotary polishing. Polishing pads for Dual Action polishing are trapezoidal in shape and have an open-cell structure (you can blow through them). Some polishers have an extractor that pulls air through the sponge to cool it down. Polishing pads for rotary polishing are rectangular and have a closed-cell structure.

The following polishing pads are suitable for Dual Action polishing:

Dual Action polishing pastes

With the right Dual Action polishing paste you will achieve the best end result. Polishing pastes for Dual Action polishing have less binder and more abrasive compared to pastes for rotary polishing. Binder also regulates cooling. Dual Action polishing requires less cooling on the surface, but more in the sponge.

Rupes' DA polishes are specifically designed for Dual Action polishing. The high performance polishing paste is formulated so that the paste has a fast action without risk of holograms. Rupes polishing pastes are available in the following varieties:

Step-by-step plan Dual Action Polishing

Use the following step-by-step plan to restore a surface to a beautiful shine through Dual Action polishing:

Step 1. Restore surface (coarse polishing)

In this step, you restore the surface from weathering, sanding scratches (P2000 and P3000) and user scratches. In addition, you apply a nice shine to the surface.

For this step, use Rupes DA-Coarse compound in combination with the blue woolpad.

  • Apply a few pea-sized drops of polishing compound to the woolpad.
  • Lightly moisten the surface with a plant sprayer.
  • Start polishing at a low speed and increase the speed after the polishing paste is distributed.
  • Treat an area of approx. 40x40 cm each time. Polish this once in horizontal strips and once in vertical strips. Spend about 2 minutes doing this.
  • Apply polishing paste again to the woolpad and treat the next piece.
  • Follow these steps until you achieve the desired result. Periodically polish the polished surface with a microfiber cloth.

Follow these steps until you achieve the desired result. Periodically polish the polished surface with a microfibre cloth.

Step 2. Surface high gloss polishing (fine polishing).

In the second step, you are going to polish the surface to a high gloss without getting holograms. So a perfect finish!

For this step, use Rupes DA-Fine compound in combination with the yellow foam pad.

  • Apply a few pea-sized drops of polishing compound to the foam pad.
  • Lightly moisten the surface with a plant sprayer.
  • Treat an area of approx. 40x40 cm each time.
  • Polish once in horizontal strokes and once in vertical strokes. Spend about 2 minutes doing this.
  • Apply polishing compound to the woolpad again and treat the next piece.  

Follow these steps until you achieve the desired high-gloss result. Polish the surface with a microfibre cloth. Now protect the surface with a polishing wax if necessary.

Questions about Dual Action polishing?

Do you have questions about this polishing technique? We are happy to advise you on Dual Action polishing so that your project will be a success! Feel free to contact our customer service!

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Products used in this article

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