Knex Ball Machine Element: No-axle Arm Drop




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 element...

Here are instructions for a small element that works really well.

It's called the "No-axle Arm Drop Element" because the moving arms don't have an axle, which creates a weird kind of movement when a ball enters the element.

Make sure to check out Step1 to see what special kind of piece you need to complete this build.

You can make this element longer or shorter if you want.

This element only works with the classic knex balls

Thanks for watching/building,

Thibault Art

Step 1: Special Piece You Need:

You'll need 6 of those

Step 2:

Step 3:

Step 4:

Step 5:



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    Question 7 months ago

    I am not having luck downloading the PDF for some of the new Instructables just posted.

    The 1st, 2nd, and 3rd download fine. The 4th, 5th, 7th, 8th, and 9th do not.

    Here is the link for the 4th one: ---->

    I'm not sure what the problem is.