Fourth time I used it, was to crush ice and it totally destroyed the plastic teeth in both the base and the connector/grinder. Was great beating up raspberries and fruits which were all soft but fear it lacks strength for harder products such as ice or possibly hard nuts.
I received it as a Christmas gift..... I loved it until the seal came lose about 2-3 months Later, only to let liquid ooze down into the motor, and of course it stopped working..... You could smell the motor burning. It seems hit and miss as to whether you get a good one or not.
Initially, the Magic Bullet did a fantastic job of making smoothies from frozen berries, bananas, and peanut butter. My major complaint is that after about twenty uses the gasket did not provide sufficient sealing of the liquid contents, which leaked into the mechanism.
Worked good for a month orso than the plastic tabs on the cuos started breaking offf. So far both tall mugs and one cup have broken the tabs no longer work even if held down!! They do not sell replacement cups!!!!