This crazy pinball machine is only made out of K`nex

From the creator:

"I'm thrilled to present to you a full sized, playable, arcade-style pinball machine built entirely out of K'nex! The only non k'nex parts are rubber bands used in the launcher and flippers. Unfortunately, no piece count is available, but I'd estimate it around 17,000. There are over 4,000 blue rods alone! For more pictures, I encourage you to visit my instructables page for more info!"

an amazing effort