Maryland-based hacker collective Unallocated Space demonstrate the latest version of their homemade fan-powered Fire Tornado rig at last month's Baltimore Reddit Meetup.

After experimenting for over a year with various constructions and fuel mixtures, the self-professed pyromaniacs have settled on "optimal angles for airflow into the vortex" and the right amount of lighter fluid capable of producing "damn impressive" results.

And by "damn impressive" results, they mean a funnel of Damnation tall enough to char the Firmament.

[Laughing Squid]