Tube Spike is the name of my Rube Goldberg machine. My name is Aaron, I am in 2nd grade. I love building things more than watching TV. After school, I like to build cars or buildings out of legos, and cardboard. This was my first time building a Rube Goldberg machine. The machine makes a splash by using spikes (needles) to pop the balloon that has water in it. The hardest part was setting up the dominoes, since they would fall down often. I had a lot of fails, over 20 I think, but it was worth it because SPLASH, it worked! It was the best part of trying this project.