Metropolis - a K'nex Ball Machine





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Published on Nov 11, 2010

Presenting, "METROPOLIS"
My tallest K'nex ball tower up to this date.

* Building time *
Oct '09 - Aug '10

Number of pieces: 29.873

* Dimensions *
Width: 1.40 m
Depth: 1.15 m
Height: 2.40 m

Weight: 48 kg

Link to picture slideshow:

Instructions for most elements used in this ball machine can be found here:


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Comments • 2,835

Jonas Clark
I think this belongs in a children's museum or in some public place, inside a big glass case. This is art of the best kind-- it engages the viewer-- and a whole lot of people would love to see this. I love building fun machines, and this is a hundred miles beyond my capabilities. Deep respect for you.
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Children, keep away, please.
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The MAD Museum
What an amazing machine! Would you have any similar items that could be made available to our museum for display, perhaps on a short-term loan basis? We specialise in mechanical, moving exhibits and something like this would be a great fit for our museum. I would love to hear from you. Best wishes, Iain Simmons. The MAD Museum (UK).
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Congrats on taking the spot as number 1 most viewed K'nex ball machine
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Don Saito
Sorry if you've answered this before, but, was the design for this AMAZING sculpture thought-out and/or plotted before-hand, or was it done just on the fly as you went along?
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I have know idea how i got to this part of youtube, but this is the coolest construction i've seen!
I felt like in Aperture Science for a few seconds.
Acclexia I
You didn't tear that masterpiece down, did you?
Garage Masters
You can't hide that Koyaanisqatsi soundtrack from me
reown tars
this things deserve a place in kids national museum.. it'll inspire kids and parent about creativity from a simple object (when i was kid, the most complicated object i created from this stuff is a truck :-/ actually i had a lot of this stuff, and ended up creating 11 truck :-| )
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