Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sander seized up after 4 hours use

I bought the sander about a year ago but hadn't used it much until recently. The motor is evidently seized up and I'm not sure if I have any time left on the warranty. I bought four boxes of sandpaper for this sander, but will not buy another Porter Cable tool. I only hope my PC biscuit jointer and nail guns don't suffer the fate of this poorly built tool.