If you thought The Citadel was complex, check out builder Samuel Hunt’s insanely complex K’NEX ball machine. It’s made from over 50,000 pieces, has 6 networks, 33 paths, and 13 lifts. It took him nearly 2 years to construct and film all of its paths and mechanisms.
Builder knexpert06 shows off an incredible creation made using K’Nex construction toys. The 141 foot-long roller coaster has dual tracks so two coasters can race side by side. It took nearly 500 hours to build, but a full lap of the coaster takes just under a minute.