balloon poper

a few days ago, i had this idea, make a roundabout way to pop a balloon. so i got to work with tinker toys and dominos and marbles. we created many different courses but this was the best track. i will try to explain it best i can, we still cant take pictures becuse its still broken. 1 train goes down the sloped track. 2 train hits tinkertoy,tinkertoy swings around and hits the dominos closesed to you.3 dominos go through the arch.4 falling dominos hit dominos on a lower level. 5 dominos hits train.6 train goes down sloped track. 7 train hits dominos. 8 dominos go up steps. this is the hard part,9 dominos hit support that holds up a knife 10 knife swings down and pops balloon