Turing Tumble Ball Reloader

I take no credit for this work. These files, as well as the text below, are 100% the work of Paul Boswell, the creator of Turing Tumble (the marble-powered computer). You can find these files shared publicly on his website:

https://community.turingtumble.com/t/challenge-3-ball-sorting-reset-system/90/21

"I made something like the drinking straw idea several of you suggested.

You push it down over a ball and the ball pushes by the rubber band, but doesn’t come back out. You can keep pushing it over balls to pick up more. You can also see how many balls you have in the loader by looking through the holes in the side.

We’re going to make injection molds for this and have it available on our website, but it will take at least a few months before it’s ready. In the meantime, you can 3D print your own. Here’s everything you need:

Rubber band:

The rubber band is a #31 size (2.5" long, 1/8" width, 1/32" thick). You can find it (or something very similar) in pretty much any p