Knex Ball Machine Element: Locking Arm

Introduction: Knex Ball Machine Element: Locking Arm

About: Hey everyone. I'm Thibault Art and my biggest hobby is to build huge machines in K'nex. I like also to draw a lot and take care of my corn snake. On this page you will find K'nex ball machines, K'nex elements,…

Here are instructions for the most complicated element that I've made for my latest knex ball machine called Pluto.

It works well enough and uses a lot of special pieces, so make sure to check out Step1 to see what kind of special pieces you need.

You can watch the video above (9 New Knex Elements) to see how it works.

Thanks for watching/building,

Thibault Art

Step 1: Special Pieces You Need:

Amount needed:

picture 1: 1

Picture 2: 1

Picture 3: 1

Picture 4: 2

Picture 5: 2

Picture 6: 2

Picture 7: 5

Step 2:

Step 3:

Step 4:

Step 5:

Step 6:

Step 7:

Step 8:

Step 9:

Step 10: Little Detail:

Let the spinning basket rest on the side of the landing path.

Step 11:

Be the First to Share


    • Halloween Contest

      Halloween Contest
    • Teach With Tinkercad Contest

      Teach With Tinkercad Contest
    • Metal Contest

      Metal Contest



    10 months ago

    I really like this element and have used it in a few small projects. However, every second time I build it, the ball just bounces off the guard rail after leaving the spinning basket. I really can’t figure out why it’s doing this. Usually if I just try to build it again it works fine. But to be having the same issue more than once I may just be making a simple mistake. Any thoughts?