Intro: Knex Ball Machine Element: Swing Arm
Here are instructions for a really creative element. The best way to see what it does is to go watch the video below. It's easy enough to build and works about 95% of the time. You do need 2 special pieces to complete this build (see step 1).
If there are any problems/ questions feel free to ask me in the comments below.
Thanks for watching/ building,