This is my second ball machine on instructables...Parallax! Definition for the curious:(Parallax-a term referring to a technique in astronomy used to find the distance to a star). Anyway, this machine has four paths, and some elements a bit more complicated than those in Subduction (my other Knex ball machine). Parallax uses various elements by users from around the site; I'll give credit on the path steps. Also, look for my Green Flex Path-my own invention. Enjoy!
Video at http://www.youtube.com/watch?v=7Elsog83MnU&feature=youtu.be or below (another improvement over Subduction...video! Sorry if it's not the best quality...I've never made a movie before; it's better than nothing. Once again, for the curious, the music in the video is Frederic Chopin's "Etude in C minor, op. 10 no. 12 'Revolutionary'")

Step 1: The Lift

I used Tornado96's Alternating Arm Lift (1 extra module) and yardking's infinity switch for my lift and path separator. Also it has a curved yellow slide path that I came up with for tighter curves. The pictures should explain themselves...

Step 2: Path 1

Path 2 includes a classic spiral, KneXtreme's simple stair, Kariah's red ball dropper, a slightly modified martb95 halfpipe, and a basket.

Step 3: Path 2

Path 2 consists of sandrokexmaster's vertical clickers and another bit of curved yellow slide.

Step 4: Path 3

Path 3 starts with a winding descent to 8chillpill's Ball Flipper. The Flipper drops the ball onto my new pathing type (Green Flex Path, a very sturdy and versatile path) which takes the ball back towards the lift.

Step 5: Path 4

Path 4 starts with another classic spiral (a mirror-image of the one on Path 1) and then drops onto a back-and-forth descent before entering the opposite end of the halfpipe.