Not amused - hadn't been using it that hard. Running about half speed - freezing cold warehouse. About 5 minutes use. Nasty burnt fibreglass type smell coming from it and has a nasty death rattle. I was cutting through a small bracket with a diamond cutting disk. It was doing a nice job of it as well. Complained to Amazon. Going back for repair/replace - only about 6 months old and used about 5 times.
Definitely not a replacement for an air grinder