Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Spills all the time

This is really flimsy and poorly designed. The part holding the blades gets loose too easily, i.e. while mounting the holder on top of the motor, while removing it, even while just sitting on the countertop. The result is nasty spills. Also, there is a burning plastic smell each time it's used. We still use this seldomly (with great care and trepidation) when my wife craves smoothies, hence 2 stars.