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Finally it's done! Metropolis, my second ball machine. It has a total of 12 different paths, 16 if you count all small sidepaths as well. And it consists of many new elements I designed myself.

I have posted the instructions of some elements here:
Link to Instructions


Building time:            Oct '09 - Aug '10

Dimensions:              Width   1.40 m
                                      Depth  1.15 m
                                      Height 2.40 m

Weight:                        48 kg

Number of pieces:    29.873


Enjoy the video and thanks for looking.

Kairah
<p>Only twenty nine point eight seven three pieces? That's funny I would guess it would be more like somewhere around 29,873</p>
<p>That's amazing.</p>
<p>Wow.</p>
<p>Nice ball machine check out mine</p>
<p>Wow so cool! I think the most amazing part is that you did it with just 3 motors!</p>
alright now give us step by step instrutions :)
<p>lol</p>
Instructions? Lol jk
<p>what k'nex tubing do you think is best for k'nex ball machines?</p>
<p>I've watched the video like at least 100 times and I still don't know how you got that zig-zag element to work (I've made some myself!!!)</p>
AMAZING!!!
i agree
Thanks!
No Problem!
this is epic beyond beleif. congratulations!
can you tell me were i can buy this, i would really appreciate it. i love knex and i want to build this thing so if you could please tell me were i can buy it and how much it was thank you.
In case you're still wondering, there are no instructions for something like this. He designed and built it over a really long time, and likely bought quite a few extra pieces along the way. I'm working on something similar right now, and it's a lot of patience and taking things apart when they don't work exactly how you want them to
Truly awesome, This is by far the most colossal K'nex ball machine on instructables and was more than worthy than my time, it is far beyond optimum! You earnt a sub! Keep it up mate ( yes this comment is late...)
Omg that is the most gigantic knex creation i have ever seen!
How much power does the whole thing draw? This is the best Knex machine I have ever seen! Making something like this for me is impossible as I would quit in less than a week or 2 XD
if you dont mind me asking how much money do you think you have in knex?
I don't really care for k'nex, but that was the most ingenious thing I have ever seen. props.
Great ball machine! This is probably the best ball machine on instructables. Nice job. <br>
+1 on the Philip Glass music!
How did you make that!!!!!!!!
hey kairah are you making a new machine or or you just going to leave metropolis up forever? because i think everyone in the instructables knex ball machine community thinks your a god or something and we really want to see another machine if your making one or know if your never going to make one again. PLEASE RESPOND! YOU ARE AMAZING!!!!!
awesome work!<br>
hai
<strong>WOOOOOOOW!!!!!!!!!!!!!!!!!!!!!!!<br> so cool!!!!!</strong>
Great music
awesome again. i was thinking that if you want a challenge tat you could try to rebuild one of these from this site or any others again you dont have to. K.I <br>http://www.automotto.com/entry/k-nex-assembles-rods-connectors-to-replicate-means-of-transportation/
Those are incredible! Did you make these?
no they were on a website
Oh.
Awesome!
Holy crap I thought that it took 2year or some thing like that5*
Oh, wow! There are so many original ideas here.<br><br>Hearty congratulations on a wonderful achievement.
WOW! I don't have any words to express what I want to say. That is just amazing!
HOLY CRAP!!!!!!! I'VE SEEN SUM AMZAING STUFF BUT THIS BY FAR IS THE KOULEST THING I'VE EVER SEEN IN MY 13 YR OLD LIFE!!!!!!!!!! YOU R MY HERO!!!!!!!!!!!!!!!
Absolutely incredible. Beyond words.
who thinks this should be a knex set... it would cost 1000 pounds but who cares<br>
O_O<br><br>I am stunned. I absolutely am. What is there to say about this, other than that it is awesome beyond words?
If that number (piece count) is what I think it is... you have WAY too many Knex. But at least you can build with them. I mean it. That is awesome!
i luv it =)
This is insane! It Should go in a museum
HOOOOOOOOOOOOLLLLLLLLLLLYYYYYYYYYY SSSSSSSSSSSSSHHHHHHHHHH#TTTTTTTTTTTTTTTTTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!!! ITS HUGE
THATS WHAT SHE SAID!
Hehe.. Like^^
If you can make this you have soo much potential as a mechanical engineer and even more. this is just mind boggling but you got some straight up real potential. now you just have to channel this into a real-life machine or something similar. like a childs vending machine for in places like chuck-e cheese's that gives you the ball at the end of this whole contraption and you could charge like .75 or a dollar per play. you get the hint. your talented
Possibly the coolest knex creation ive ever seen

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