In the automotive world, DA stands for “dual action” and you’ll typically see DA alongside the word sander. Dual Action refers to the way the sanding (or polishing) head not only spins, it does so in an elliptical motion for a seemingly random pattern. That’s really, really helpful to ensure an even sanding job and smooth surface for your paint finish.
Our friends at Summit Racing tested out one of our favorite DA sanders in particular, the Aircat model 6310 dual action sander. In this video, you’ll see firsthand how it can help you create smooth, even surfaces on your next automotive paint or body project.