Instruct: Classify Amazon reviews into positive or negative sentiment
Query: worst coffee maker i ever had

I bought this product in J&R yesterday and returned it today. The coffee tray failed to close after grinding the coffee every single time. If it wasn't the collar that stopped it from closing than it was the spring that lacked the strength to close it. The coffee comes out too weak, even if i grind 10 cups for 6 cups of water. The filter #4 that they suggest we use with the machine doesn't fit fully even if i fold it like they suggest i do. Overall it is the worst possible design and whoever designed it needs to be shot.The coffee is too weak even after i grind 10 cups worth of coffee for 6 cups of water. And it uses more coffee than my other Krups Burr grinder and coffee maker used to use.