Introduction: Knex BallBuster Ball Machine Instructions

Picture of Knex BallBuster Ball Machine Instructions
This is my final ball machine for the rest of the year since I have to go back to college. I wanted to end my ball machine spree with something huge and this is what came out, a 6' 10" high tower with five paths and a new element made by me. That element is on path one. This project took a lot of my knex to the point where I ran out of green rids!, I had to start using the black ones. Anyway, I hope you enjoy building this beast. This ball machine has the most pieces out of all of my ible's, 8,600!

Step 1: Piece Count


grey: 17
yellow: 765
blue: 1416
white: 577
green: 1320


white: 203
blue 3d: 286
purple 3d: 723
yellow: 692
green: 68
red: 495
light-grey: 13


gold track connector: 326
gold track rod(length of red rod): 14
silver spacer: 227
blue spacer: 179
tan-clip: 28
blue-clip: 17
Y-clip: 87
ball-socket  connector: 2
black rod: 5
tan rod: 2
purple flexi rod: 26
orange flexi rod: 14
chain links: 170
track spice: 9
red gear: 15
yellow gear:1
Large yellow gear: 1
blue gear: 5
large tire: 1
medium tire: 2
medium tire no tread: 5
medium tire tread: 2
small tire: 7
large new tire: 3
motor: 1
Balls: 5-10


Step 2: The Base

Picture of The Base

Where all ball machines start from.

Step 3: White Floor, Return Track, Lift Wheel and Motor

Picture of White Floor, Return Track, Lift Wheel and Motor

Why do I like wheel lifts? I have no idea!

Step 4: Main Support and Lift

Picture of Main Support and Lift

The tallest section on the machine.

Step 5: Other Supports

Picture of Other Supports

They're important aren't they?

Step 6: Path Selectors

Picture of Path Selectors

There are four of them to make five paths.

Step 7: Path 1

Picture of Path 1

This path contains my new hopper car element. This also uses Sandroknexmaster's leap-frog element. This step also has exactly 100 pictures!

Step 8: Path 2

Picture of Path 2

I like to call this path " the fast track to success" since it is a roller coaster path.

Step 9: Path 3

Picture of Path 3

A very erratic path.

Step 10: Path 4

Picture of Path 4

A nice slow path around the front support tower followed by thirteen ball alternators.

Step 11: Path 5

Picture of Path 5

This path was hard to design in terms of space. I had to make it hop over a section of path 4 and weave around path three and two.

Step 12: Modifications

Picture of Modifications

These are some mods I made while I was recording the machine.


poil87 made it! (author)2014-03-31

Sorry for taking so long to get the pictures uploaded, I'm not the best at remembering to do stuff. xD

knexpert#10829476 (author)poil872015-04-22

You have no idea how happy this made me feel:D

poil87 (author)knexpert#108294762015-04-22

Aw Thanks it was a great machine =)

knexpert#10829476 (author)poil872015-04-24

You have won the achievenemt: BallBusted.

poil87 (author)knexpert#108294762015-04-24

Awesome ^_^

RyanN60 made it! (author)2017-07-07

look at it xD

RyanN60 (author)2017-07-07

wanna see a pic of it now I moved and it didnt really survive lol since I made it in my basement. It's missing huge chunks cause I have also been taking parts from it for echo.

RyanN60 (author)2017-07-07

dude I need help on echo I have question there

Haze013 (author)2017-01-28

starting on this project today!

RyanN60 made it! (author)2016-10-24


Very nice! Thanks for building!

kerri_kemp (author)2014-06-23

Hi, I'm having a go at building this but having a few issues with the new cart element. Can't seem to get the weight right to make the cart move either up when empty or down when it has balls in it.

Any suggestions?

WD40 always works. Grease the track with it:D

martijnb95 (author)2015-04-12

step 3 pic 14: i see what you did there :P

very nice machine though.

KnexExtreme90 (author)2014-11-19

*Jaw drops* You made... Instructions?!

www139 (author)2013-08-10

Very good!
My only comment is that maybe you should record the lift(s) at the beginning of
the video. You could look at my ball machine video.
Just click on my profile and look for "automated a k'nex
ball machine".
Otherwise, very good!
I love the white mat/floor/whateveryoucallit

knexpert#10829476 (author)www1392013-08-13

Oh my god, thank you for reminding me because if I did test the lift out, I would find that I made the chain claws wrong! I never put the part on that pushes the ball off the claw! Thank you so much for pointing this out even though you didn't point it out:D

www139 (author)knexpert#108294762014-10-19

Your welcome! (late reply... sorry!)

knexpert#10829476 (author)www1392013-08-10

Yes I should, thank you for the feedback:D

www139 (author)knexpert#108294762013-08-13

your welcome!

knex akbar (author)2014-08-12

I ran out of all my yellow rods, blue rods green rods and yellow connectors on the last step... Grrrr

JoshuaCope01 (author)2014-08-07

hi im josh! im 11 and I nearly finished this! I (my dad) orded some knex and it got lost in the mail so I never finished this project! I just want to let you know if you are 11 or over you can with ease start this project! I also had some problems with the new cart element but I fixed it, anyway great intractable and keep up the good work!

TheUnfortunateHobbit (author)2014-07-14

Look at the fourteenth picture in step 3

TheUnfortunateHobbit (author)2013-10-09

How much K'nex do you actually have? Just wondering

I'm guessing around 20,000. I'm only using my classic knex not my metallic ones.

Why did you post the same reply twice???

I pressed it once, nothing happened so I assumed I didn't hit it so I hit it again.

Smackythenerd (author)2013-10-03

Great ball machine! Took me almost a week to build!

MisterBukweet (author)2013-09-23

This machine is exactly 1 blue rod too tall... I can't build it on my table.... and I was going to say something really truly nice about this machine.. Seriously... I'm on step 7 and everything is looking way cool... can't wait to finish this... I hope my girlfriend doesn't miss her pot lid.

Aww man, I feel bad for you, one blue rod:D

2007KnexpertMan (author)2013-08-24

170 Chain Links isn't enough either. Perhaps you should update that. :)

are you sure..... in my build 170 chain links worked perfectly

poil87 (author)2013-09-16

yaaaaa im finally done building the awesome ball machine

knexpert#10829476 (author)poil872013-09-18

Really? Great job! Can you post pictures of the completed project on this ible? I would really like to see it:D

hunter999 (author)2013-08-26

Thats awesome, a worthy winner in the contest! :D

Good job on your contest win! :-D

sandroknexmaster (author)2013-08-16

Congratulations for being selected as a finalist in the Toy Rods and Connectors Contest!

www139 (author)2013-08-10

I forgot! Click the link, not the embed. It won't work.

Neato! :-D

By the way, what is the metal circle near the bottom for?

When the ball goes down the chute on path 2, it will hit a lever and hit the pan lid making it "ding". I never use the oven so why not put some use to those pan lids?:)

Nice! I'd have to say that my favorite part of the machine is that wheel cart thing (oh yeah, that's the new element, isn't it?) ;-)

Sorunome (author)2013-08-08

You build fast!
Also, this is looking awesome :D

Shadowman39 (author)2013-08-08

Cool machine! Looking forward to the video. :-)

sandroknexmaster (author)2013-08-08

That is huge! I really like it. Voted!

dickheijboer (author)2013-08-08

This looks awesome! I voted!

About This Instructable




More by knexpert#10829476:Knex ThatThing Ball Machine InstructionsKnex Chinatown Hill Ball Machine InstructionsKnex Eclipse Marble Machine Instructions
Add instructable to: