They’re built out of plastic because it’s $0.02 cheaper than a metal part and 99.9% of them last through the warranty period.
It’s not deliberate that they make stuff that fails, they build stuff that lasts only as long as it needs.
It’s not deliberate that they make stuff that fails, they build stuff that lasts only as long as it needs.
KitchenAid switched to all-metal gears on their high-end models fairly recently. In the past, all models had a nylon gear, but the new high-end mixers use electronics to protect the motor.