Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Bad grinder

The place I used to work at went through three of these in three years. One only lasted a month. The first two's switches went out and the last one's wheel lock wouldn't work. It finally went to a Viking funeral when it burst into flames while I was using it. I finally convinced the boss to buy a Craftsman professional grinder and we used it for five years. It was still going after I quit! Save your money for a better grinder.