Cataclysm Knex Ball Machine





Introduction: Cataclysm Knex Ball Machine

After over a year of construction, Cataclysm is finally finished! It has 6 paths and 10 lifts. 8 of those lifts are new. It stands almost 8 feet high. I haven't counted the pieces yet, but I will soon. The 10 lifts are organized into 3 networks, each network having two paths. I had to buy many pieces while building, most of which were blue connectors, blue rods, and green rods. I completely ran out of yellow rods. A Lego train runs around the bottom of the ball machine. :-)

This used 16 AA and 3 C batteries to power the motors.

Construction was started on May 25, 2009, and I finished on September 25, 2010.

The grand total of pieces is 28,538!

Click here for the picture album, with higher quality pictures!

Here is the video!



  • Minecraft Challenge 2018

    Minecraft Challenge 2018
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    Gluten Free Challenge
  • Sew Warm Contest 2018

    Sew Warm Contest 2018

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I love the green tunnels you utilized in this build and in the Citadel.

Thanks! I was planning on making a long curving one in my unfinished ball machine, so it was built into Citadel instead.

How much K'nex do you have? And how did you get it all? Buying sets? Ebay? And did you buy them yourself, or did someone else buy them?

I have 40-50,000 pieces, and most were bought from Ebay. Recently I started buying them with my own money, but lots of the other pieces were for birthday/Christmas presents.

have the balls ever hit each other on the race track?!

No, one ball was always delayed so they wouldn't collide.

WOW!!!!!! that would never work for me!

haha - just realized that you posted this on by birthday, I feel special!

Nice ball machine! Very innovative and ingenious! :-)

Do you have any idea where I can get some closer images or instructions on the element in 2:29 - 2:33 ?