Introduction: DenCity- a K'nex Ball Machine Instructions
This instructable is currently in beta as of descriptions of the paths but all the photos are uploaded.
Also, this is the first instructable where I cropped all the pictures!
Credit goes to yardking42 and Martijnb95 for use of some of their elements.
Step 1: Piece Count
RODS:
Grey: 27
Red: 148
Yellow: 377
Blue: 988
White: 617
Green: 1198!
TOTAL: 3,355
CONNECTORS:
White: 172
Blue 3D: 265
Yellow: 746
Green: 102
Purple 3D: 458
Orange: 336
Red: 343
Light-grey: 38
Dark- grey: 346
TOTAL: 2806
OTHER/ SPECIAL
Tan-lock: 42
Blue-clip: 23
Y-clips: 64
Silver-spacer: 292
Blue-spacer: 159
Track-splice clip: 1
Red gear: 20
Large yellow gear: 2
Yellow gear: 4
Blue gear: 13
Purple flexi-rod: 25
Orange flexi-rod: 13
Black rod: 4
Tan(red) rod: 8
Small tire: 5
Medium tire: 1
Large tire: 1
Balls: 3+
Chain links: 71
Motor:1
TOTAL: 749
GRAND TOTAL: 6,910
Step 2: Base
The base is the start of all ball machines. It is also the start of most of the problems I faced when I was structuring the machine itself.
The last pic will explain why.
Step 3: Gear Mechanisms and Wheel Lift
This step includes all the gears for most of the machine as well as the wheel lift. This step may take you a while.
Step 4: Main Support, Lift, Motor and Drive-Shaft
Almost done with the mechanics!
Step 5: Chain-Transport System
The main feature on the machine despite being there only for path 1.
Step 6: Secondary Supports and Path Selecters
Last long step before the paths!
Step 7: Path 1
The first path has the most interesting element on the machine, the single-ball block-gate.
Step 8: Path 2
This path uses Yardking42's Sidewinder element and
Step 9: Path 3
I would call this the lazy path because there is no major elements besides some super path.
Step 10: Path 4
The phoenix rises again! This uses my favorite element I used in two other ball machines as well as a wheel arm from Davinchi.
Step 11: Path 5
This path uses super path as well as

Participated in the
Toy Rods and Connectors Contest
2 People Made This Project!
- Melon_knex_man4 made it!
- Happyllama831 made it!
31 Comments
8 years ago on Introduction
I just spent £45 on extra k'nex so I can build this over christmas! It better be good ;)
8 years ago on Introduction
You are absolutely one of my favourite ball machine builders!
I like every machine you built. It's incredible, they're always sturdy and looking good. always cool new elements too. You also work very fast and you keep amaze me with clear, full instructions of the complete machine, every time again.
And this machine proves it again!
Congratulations for being feautured and good job! I voted! :D
Reply 8 years ago on Introduction
Thank you so very much for that comment! I'm just about ready to upload my largest ball machine on instructables. This will be my last one until the end of 2013 since I have to go back to college. Expect it in 1 to 2 weeks:D
Reply 8 years ago on Introduction
Ok can't wait to see it!
8 years ago on Introduction
Great job, it must be hard to make instructions for such a dense machine. I like how everything is hooked up to one motor and that chain conveyor at the bottom. I also like the pun in the name. :-)
Reply 8 years ago on Introduction
I think my next machine will be called " BallBuster" XD
Reply 8 years ago on Introduction
I like. :-P
Reply 8 years ago on Introduction
I'm acually almost done with BallBuster now. It has five paths and is 6' 10" tall.
Reply 8 years ago on Introduction
You build pretty fast!
8 years ago on Introduction
DenCity has a lot of density
Great pun.
8 years ago
Wow I don't have anything stupid to say about this!!!!!!!!! I am amazed!:-)
8 years ago on Introduction
THAT IS NUTZ! I could mess with that for HOURS!!!
Voted up and favorited!
Reply 8 years ago on Introduction
actually there is no voting up...hmm. well I favorited it!
8 years ago on Introduction
Sir "Speedy Gonzales" (you work so fast!) has once again proved his epicness! ;-) Absolutely amazing. You have surpassed my current expertise; keep it up! :-D
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MORE! MORE BALL MACHINES!!!!! :-D
5 years ago
really good ball machine! this proves that you dont need a floor to make a good machine! it made me feel really confident about my upcoming ball machine, Journey. Thanks for sharing, good job!
7 years ago on Introduction
Are the red and yellow balls the same as the black and white balls? I only have the red and yellow ones?
8 years ago on Introduction
nooo i have all the pieces except for just one large yellow gear!
8 years ago on Introduction
cool
8 years ago on Introduction
Hi, I'm having some problems with the balls going up the spiral lift. They keep falling off. did you experience this when building?
Reply 8 years ago on Introduction
No, did you build it correctly? This spiral lift is modified to be a little stiffer.