The orbital I am thinking of is a dual action one. Its actually quite light and even in its highest setting barely generates enough heat to warrant the concerns your thinking about. I have this unit http://www.meguiars.com/en/automotive/p ... -polisher/
Works a treat for low risk, light swirl/scratch removal. Again, not like a rotary which spins at high rpm. This is more like a low rpm at best and offers not just a circular motion but an up/down motion to the polishing. Used it many times on my other cars with no issue or damage. The finish comes down to having quality materials really. But the unit is best used by those who know a little about detailing and want to give it a go themselves. Most pro's use the rotary as it cut faster and delivers a better finish but there are risks with burning the paint/clear. Hence why they are professionals.



