Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor front gripper design

I stuffed this sander in a drawer shortly after I bought it because the front gripper failed to hold the securely. The concept is wonderful but in practice, it makes the tool frustrating to use. The sand paper falls off after less than a minute of sanding. Either that or the rubber gripper on the front clamp comes off.Recently, I've started using it again. I spray the back of the sandpaper with 3M 77 adhesive before attaching it. Voila, it works. I like the sander but I cannot believe they are still selling this tool given the faulty design.