Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Design flaws--I returned it

I got this to grind just once, and the coffee I made was very very good. Then I could never get it to grind again--I just couldn't get the top to align properly so that I could set the grind setting.Also cleaning was not quick and easy. The grinds fell all through the machine, requiring it to be taken apart and each part wiped, to prevent the grounds from going rancid and affecting taste down the road.