Introduction: Floor Double Arm Lift, a Knex Ball Machine Lift

Picture of Floor Double Arm Lift, a Knex Ball Machine Lift

Hello everyone!

The Floor Double Arm Lift is the first of 2 lifts first seen in my ball machine Revolution.

This one is a double arm lift. Nothing special you'd say. But...

It's a bit different than a standard arm lift because the balls enter directly from the floor, not from an entrance track (as the title says).

When it's not in a ball machine, I think the Floor Double Arm Lift looks quite ugly. But it looks better when you build a ball machine around it.

If you're going to build this lift, please read the image notes, they might come in handy!

You can always send me a question if necessary with a comment or PM.

I hope you like it and thanks for watching / building!


Step 1: Piece Count

Picture of Piece Count

If you want you can count the pieces before you start building.

Here is a list with all pieces included in this lift, named by their original color:


Green: 230

White: 126

Blue: 132

Yellow: 67

Red: 76

Gray: 29

Total rods: 660


Dark-grey: 19

Light-grey: 17

Orange: 44

Red: 15

Green: 12

Yellow: 59

White: 116

Purple: 98

Blue: 40

Total connectors: 420


Blue spacer: 22

Silver spacer: 41

Tan clip: 5

Y-clip: 9

Small blue gear: 1

Large yellow gear: 1

Motor: 1

Total other: 80

Grand Total: 1160

Step 2: Floor

Picture of Floor

The first step contains the floor and the base underneath it.

Step 3: Frame (Part 1)

Picture of Frame (Part 1)

The first part of the frame. There are 2 parts in total.

Step 4: Frame (Part 2)

Picture of Frame (Part 2)

Second part of the frame.

Step 5: Motor

Picture of Motor

The motor section.

Step 6: Arms

Picture of Arms

In this step we're going to make the arms.

Step 7: Exit

Picture of Exit

The last step!

Step 8: Finished!

Picture of Finished!

Your Floor Double Arm Lift is finished! Congrats!

Always slide the switch of the motor to the left.

If you have built this lift, you can always send me a picture so I can add it to this step.

Thanks for watching / building!



augustuss (author)2015-08-16

Do you have small ball machines?

No not really, the smallest ball machine you can find on my profile is revolution. Maybe I'll make a smaller ball machine in the future.

augustuss (author)2015-08-16

WOW!!!!!!!!!!!!!!!!!!!!!!!! Awesome!!!!!!!!!!!!!!!


KNEXnCoding (author)2015-05-06

This looks awesome! I'm going to use this in my machine, just not the floor part.

Great! Send me a link when your machine is finished :)

artemisje (author)2014-12-17

Cool lift! Would it also work when I'd only use the arms and motor and build it in a different environment (I was planning to let the arms pick the balls up at the end of a tube-track).

Yes, you'll have to make your own entrance part then. But I'm sure it is possible with some mods :)

Well, I think I am able to use my own creativity :). The pictures were very clear and easy to use, btw

Thanks! :)

ryry2011 (author)2014-08-25

cool I may use this in my up coming ball machine.


KRA5H (author)2014-07-21

I tried to vote for this in the K'nex contest but it hasn't been submitted yet. Anyway, I hope you vote for my K'nex kinetic sculpture:

I'll vote for yours as soon as I see it in the K'nex contest.

sandroknexmaster (author)KRA5H2014-07-21

It's already submitted, but not accepted yet.


KRA5H (author)sandroknexmaster2014-07-22


sandroknexmaster (author)KRA5H2014-07-22


Knex2thelimit (author)2014-07-21

Congrats on getting featured! :D

Thanks! :D

ManMister (author)2014-07-20

Awesome lift! What about the wheel lift?

Thanks! Coming soon :)

Zombiekiller-93 (author)2014-07-20

Another great ball lift, you could try adding another two arms if it is possible

Could be possible. Thanks!

Knex2thelimit (author)2014-07-20

Cool! I always like your work. :)

Thanks! :)

Sorunome (author)2014-07-20

Nice lift! :D

Thanks! =D

About This Instructable




Bio: Hey! I'm Sandroknexmaster. I like building with knex, especially ball machines. I live in Belgium. I speak Dutch, but also English and French. I ... More »
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