Wandleuchten | Feuchtraum geeignet

After using this for a bit, I was really starting to notice how heavy, hot and loud it was. Heavy is just fine when I'm polishing the top of my car, but gets a little tiring on the sides. The loud part, well, it's not exactly uniform. It sometimes whines quite badly. It made me wonder if it was about to explode several times, but it never did. I polished two crossovers and a minivan with it. I would say it was getting a bit louder by the time I finished the third vehi...