Introduction: Project S (Knex Ball Machine)

Picture of Project S (Knex Ball Machine)

Here are the instructions on how to make my knex ball machine.


Step 1: Piece List

Piece List

Red - 3
Yellow - 42
Blue - 56
White - 32
Green - 58

White - 2
Blue - 45
Yellow - 27
Purple - 44
Green - 2
Red - 10
Orange - 11
Light Gray - 2
Dark Gray - 22

Gray Spacers - 7
Blue Spacers - 12
Medium Gears - 7
Small Gears - 1
Y-Clips - 4
End Caps - 14
Motors - 1
Chain Links - 27

Step 2: Base Part 1 (Path)

Picture of Base Part 1 (Path)


Step 3: Base Part 2 (Motor and Gears)

Picture of Base Part 2 (Motor and Gears)


Step 4: Middle and Top

Picture of Middle and Top


Step 5: Chain and Chain Support

Picture of Chain and Chain Support

2:You need 27 chain links. Put one of these on 10th and 23rd chain links.
3:Whole chain.

Step 6: Path and Path Supports

Picture of Path and Path Supports


Step 7: Assembly

Picture of Assembly

1:Base Part 2 + Base Part 1
2:Middle and Top + Base Part 1 and 2
3:Add Chain Support
4:Add Chain
5-8:Path and Path Supports + Base Parts 1 and 2 and Middle and Top
9:Add Balls
10:Turn switch on motor to the left.
You're Done!

Step 8: Check Out My Other Instructables

Picture of Check Out My Other Instructables


stevenator2000 (author)2013-10-03

Where did you get the blue balls?

stevenator2000 (author)2013-10-03

How do I make the lift? Do more pictures next time.

the_boss_builder (author)2012-03-18

uh about the parts list ballmachine balls?

~Meme~ (author)the_boss_builder2012-08-17

It takes one.

the_boss_builder (author)~Meme~2012-08-17

i know, it was meant to be sarcastic

Bartboy (author)2008-09-28

does it have to go up and down to qualify as a ball machine?

jollex (author)Bartboy2008-09-28


Bartboy (author)jollex2008-09-28

aww, look at mine , it is THE MOST POINTLESS thing ever, but if you say it has to go up ill add a ramp.

dannypalmer2001 (author)Bartboy2011-10-26

i like it ,is it on this site

jollex (author)Bartboy2008-09-28

MIne is smaller, :P

Bartboy (author)jollex2008-09-28

somewhat, mine uses less rare pieces, can use any motor, needs no chains or gears, has a carrying handle, and uses less pieces.

DJ Radio (author)Bartboy2008-10-07

actually, most of the parts on your thing are rare. if you want to know what i am talking about, they can be found on the stock of the storm 222

Bartboy (author)DJ Radio2008-10-08

yeah, but if you have one of them, you have all of them, and has nobody showed you how to substitute pieces?

DJ Radio (author)Bartboy2008-10-08

no, i dont have any parts like that

jollex (author)Bartboy2008-09-28

True.......but mine is smaller, :P

Bartboy (author)jollex2008-09-29

yeah, it is, but I built it and it keeps jamming!

jollex (author)Bartboy2008-09-29


Bartboy (author)jollex2008-09-29

the chain just suddenly locked in place, even when I had a hand crank.

jollex (author)Bartboy2008-09-30

Then you probably made it wrong.

Bartboy (author)Bartboy2008-09-28

fixed! now it goes up 2 centimetres, then just falls, gos around, up again, falls etc. etc.

halo99 (author)2009-10-23

Hi i was just wondering can i post my own instructables on this?
It's a modded version becauase 1 less blue ones because alot of people (including me) don't have that much of blues and 2 it uses a different motor because again people don't have (including me) that kind of motor

p.s.i will credit you!

randomocity (author)2009-07-13

2 comments...1:If you read down all of the comments so far, there are like, 10 'It is posted!'s. 2:If you watch the video, towards the end, the balls hitting the track switcher are in perfect sync with the clapping in the music! See for yourself;

AlexD2261 (author)2009-06-05

hi jack have u got any more idears for making knex things coz if u have please comment me back ASAP Alex2261

jack999 (author)2009-05-24


jack999 (author)jack9992009-05-24

this ball machine is awesome

Knexpertevan (author)2008-10-28

It appears that you have different views of the exact same step or do you make three of the exact same piece??

jollex (author)Knexpertevan2008-10-29

When it says 1-3 instead of 1 then 2 then 3 it means it is just different views.

Knexpertevan (author)jollex2008-10-29

Ya I thought so, we just did that and it worked (kinda). There was a few fundamental errors though, mostly the chain, it kept getting stuck different places :(

Knexpertevan (author)2008-10-27

I don't quite get if your connecting the steps each time or making every individual step THEN connecting them, like, I know you connect at the end, but im wondering if you connect 1 and 2 and 3 then make more and connect that, I just don't get it really, plus the last picture is a little too close so i cant tell how to connect everything............ have any um.........suggestions?? Thanks.

jollex (author)Knexpertevan2008-10-28

You just connect the smaller parts in each step and at the end you connect all the steps.

Knexpertevan (author)jollex2008-10-28

Because in step 3 I dont see step 1.......and do you just add step 2 and 3 together?? Cuz also I dont see step 4 in step 6........................ its just kinda confusing.....

jollex (author)Knexpertevan2008-10-28

No you make each individual step and then connect all the steps at the end.

Knexpertevan (author)jollex2008-10-28

OK thanks..............I'm having a k'nex party this afternoon and I though it would be fun to make a little prototype to start out with so thanks again!

jollex (author)Knexpertevan2008-10-28

No problem.

anaconda (author)2008-10-19

i pressed the wrong button. ARRRGGGHHHH!!!!

jollex (author)2008-10-15


shadowninja31 (author)2008-09-29


jollex (author)shadowninja312008-09-29


The KNex Weasel (author)2008-09-28

Pretty cool there, jollex.

jollex (author)The KNex Weasel2008-09-28


Der Bradly (author)2008-09-28

Sweet, its sooooooo easy to build! =D

jollex (author)Der Bradly2008-09-28

Yeah, check out <a rel="nofollow" href="">Project N</a> if you want to see an even smaller one.<br/>

The Jamalam (author)2008-09-28

nice! it is soooooo easy! i have 2 ball machines now =D

jollex (author)The Jamalam2008-09-28

I just made an even smaller machine that I will post soon.