I recently broke the "U" shaped plug of the ground wire that connects to the back of mixer. Ground wire still works, but I want to be able to put that piece back together. Would super glue or some of the sort work just fine? Just curious. Sorry for the newbie question.
Do nothing. The spade lug is for convenience only and is not needed for a good connection. A bare wire connection is better than anything else and far better than a poor spade lug connection.