I bought an HF 7" angle grinder about 4 years ago. Used it to sand off the defective primer and paint on my Dodge truck prior to repainting. Only have put a total of 15 hours of use on it since new. I thought of it as a one time use tool when I bought it. It held up ok for the paint sanding job, but I needed to grind some bolt heads down this week and it released the smoke after about 5 minutes of use. I blame this more on my mistake in purchasing the HF grinder than on the quality of the grinder. Now that I know that I occasionally need an HD angle grinder, I am going to buy a quality grinder (Milwaukee or Metabo) in the near future. The moral of the story is to buy a tool that is more than capable for the way it will be used, and only pay for it one time.