I bought this tool thinking that I only need to sharpen my blades a few times a year so an inexpensive model should be sufficient for my needs. I was able to sharpen 2 blades the first time I used it and put it away. I went to use it again today and the motor would come on, but the grinding wheel was not spinning. I called the customer service number and since it is under warranty they are going to send me another one. Based on the performance of this one I don't think it will do much better we will see.