It Took 297 Attempts For This Mind-Blowing Rube Goldberg Machine to Finally Work | iPads, MakerEd and More in Education | Scoop.it
From interestingengineering.com - September 30, 2017 5:35 AM
This might be the ultimate home-built Rube Goldberg machine you have ever seen. The monstrous machine runs for three minutes and took four months to build.