# K'nex Ball Machine Impossible

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Hi there!

After 10 months of work, we're proud to present you our biggest k'nex ball machine: Impossible! This is by far our biggest k'nex ball machine ever, and has: 13 paths, 7 lifts divided into 2 networks. The whole thing runs on 2 motors, but a 3rd is necessary for an element. It is kind of confusing how the lifts are divided, so I'll tell you how it works. The first motor runs the top 2 arm lifts, and the wheel lift in network 1, and the chain lift in network 2. The second motor runs the first and second lift in network 2, the bottom arm lift in network 1, and the separator for network 1.

Some stats:

Height: 2.31 meters (7' 7'')

With and depth: 91 cm (3')

Number of pieces: 21,727

Number of balls: 20

Number of motors: 3

This instructable is now an entry in the "Make it Move" contest. If you feel like it, would you vote for it? It would be much appreciated. :)

Thanks for watching/looking!

www139

Instructions for the new elements: https://www.instructables.com/id/knex-ball-machine-Impossible-elements/

Instructions for the separator: https://www.instructables.com/id/Compact-Separator-a-Knex-Ball-Machine-Separator/

Instructions for the first new lift: https://www.instructables.com/id/Short-Start-Arm-Lift-a-Knex-Ball-Machine-Lift/

Instructions for the second new lift: https://www.instructables.com/id/Spinning-Push-Lift-a-Knex-Ball-Machine-Lift/

Instructions for the third new lift: https://www.instructables.com/id/Versatile-Chainsaw-Lift-a-Knex-Ball-Machine-Lift/

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Participated in the
Make it Move Contest 2016

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## 27 Discussions

did you go through and reply to every single one of those comments?

Thanks! I don't think they are, but even if they are, it'll be later this year, meaning that we'll have enough time to enter some other projects. :)