Citadel Knex Ball Machine

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About: On my page you'll find lots of different Knex projects, from ball machine lifts to useful items. I hope you enjoy!  _______________________ Current avatar: Target of my skeeball machine Past avatars...

Hello everyone! After 3 years, my ball machine Citadel is finally finished! This machine features around 50 new elements, 5 different lifts, and 2 new path separators that separate into 17 paths. It's also themed, with Knex men all over the place working on it, giving it a factory-type feel with catwalks and stairs. There are 3 total motors, one of which powers all 3 floor lifts. The actual time it took to build is one year, there was just a long break in between. All of the paths (except one) were built in 6 months, starting in December 2015. I hope you enjoy!

Here are the element instructions!

Click here for more pictures!

Here's the video:

Here's the construction album.

Stats

Started building: Jan. 21, 2013

Finished building: June 20, 2016

Height: 8 feet

Width: 5 feet 3 inches

Depth: 4 feet 2 inches

Pieces: 50,000 - 60,000

Thanks for viewing!

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    147 Discussions

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    kevinandbelmaShadowman39

    Reply 3 months ago

    Is it okay if I make instructions for the semi-circle ball selector?

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    kevinandbelmaShadowman39

    Reply 3 months ago

    Thanks! I have the semi-circle done and I'm working on a base for it. The mechanism is very smooth.

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    Shadowman39kevinandbelma

    Reply 3 months ago

    Cool! Also, I know of someone who has built the 4 way path separator, and is going to send me pictures of it. So if the pictures I gave you aren't enough, there will be more soon.

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    kevinandbelmaShadowman39

    Reply 2 months ago

    Thanks! It's almost done and I'm starting the instructions. I'll make sure to give you credit.

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    kevinandbelmakevinandbelma

    Reply 1 year ago

    Do you have pictures of the other path selector with 4 outputs? Or instructions?

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    jessbuilt

    7 months ago

    I am just going to say that this is the best k'nex ball machine in the world. This tops sandroknexmaster's machines (no offense to him, his machines are amazing) but seriously, this tops everything. I love your work, it is so amazing how the elements and paths all fit perfectly together and still look good. I am new to Instructables and am posting my first ible soon, and your builds inspire me so much. I hope to see more soon!

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    Shadowman39jessbuilt

    Reply 7 months ago

    Thanks for the kind words! I'm looking forward to seeing your machines too. Just so you know, I just posted another Citadel lift and have 2 more to come, hopefully by the end of this year. Thanks again!

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    Shadowman39kevinandbelma

    Reply 12 months ago

    Yes, mainly the stair-arm lift and perhaps the wheel lift and inverted helix used in Citadel v2.

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    Shadowman39kevinandbelma

    Reply 11 months ago

    Not sure yet, but I want to get them done before the end of the summer.