Video: The Incredible Lego 'Great Ball Contraption'

It's not every day you see something that makes your jaw drop, but today, while watching the video of the largest, most intricate Lego machine I've ever seen, mine did.

The machine, known as the Great Ball Contraption (GBC), was built by a Japanese mechanical engineer in his house over the course of two years -- a total of a whopping 600 hours in construction time.

The monstrous 5 ft x 21 ft (1.5m x 6.5m) machine boasts 17 modules that can process 500 balls for a length of 101.7 ft (31m) at a rate of one ball per second. I know, it's hard to wrap your head around it without checking out the video, below, first.

It's not just the machine's enormous size that impresses fans, but the individual modules themselves, which are described as follows:

The video of the device in action is a whopping seven minutes long, but if you're in any way interested in Lego and mechanical engineering, you really must check it out.

Enjoy!

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This story was originally posted by EE Times.

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