Instruct: Classify Amazon reviews into positive or negative sentiment
Query: poor workmanship

I had high expectations for this product, because of its review. I had been looking for it for some time before I thought of amazon. When I first used it, I noticed that the jar did not sit on the base properly. It looked like the Leaning Tower of Pisa. I realized the motor shaft was put on crooked, therefore the jar was crooked. Also, the plastic injection base was very poorly made. I returned the item for credit.