Incredible. I used to build a Rube Goldberg machine with my mom every Christmas vacation. I love the efficiency of this one, and the creativity is astounding. If I wasn't leaving for college in a couple days, I would have really liked to attempt one of these. Maybe this winter break... Anyway, thank you for your continued inspiration. -Sam
Well done Alex, I have been playing with a marble version of this with my eldest son which is cool enough, but to see a LEGO version is a real nice effort. It really does seem like a lot of work for 10 seconds, but its Western mine carts and tombstone dominos, whats not to like?