Received it for a Christmas gift and it sat in my shop for a year. Recently I needed it to sand a counter top I was building, so out it came from the tool cabinet. I cut the plastic bands from the box ,hooked up the dust bag ,adjusted the tracking and started sanding. In about 15 minutes the sander began to slow down and sparks were shooting from the brushes. I also was getting an electrical shock from the trigger. I check the Internet for solutions and decided to change the brushes. It destroyed 2 sets of brushes and sparks were still shooting out of the motor. This sander is a piece of crap and I think the dust collection is garbage. The entire motor housing was filled with saw dust when I was sanding. I'm really starting to doubt the quality of porter cable tools. For $200 dollars, I think their quality control should be a lot better. I think I might try a makita next time. Always try a new power tool when you get it before you put it away. Lesson learned.