Corrected entry: Professor Frink says he has a machine that will burn through anything but it happens to be on the outside of the dome. Why didn't the Simpsons use this to make a hole in the dome when they found a way out?
manthabeat
21st May 2016
The Simpsons Movie (2007)
Correction: There is nothing to suggest the Simpsons even know how to use Frink's superdrill.
Correction: The EPA came to capture the family so they had to run away. By the time of return, there would have already been the security seen near the end of the film.
Correction: Even if the drill was still there for the using, there is nothing in the movie that suggests if they even remembered it was there. They could have easily forgotten about it.
Casual Person