If you need a simple ball dispenser for you knex ball machine then this is maybe an element for you. It's easy to build, works really well and works with 2/3 knex balls. I would not recomend to use more then 3 knex balls at a time because it might cause too much friction and it won't work. You can always watch the video to see it in action.
If there are any problems/ questions feel free to ask me in the comments below.
Thanks for watching/ building,