Kids Ball Puzzle Toy

This is my submission for the Toys and Games contest. It's a ball puzzle that I created myself using Tinkercad.
The toy works in a way where you can mix up the balls using the turning wheels, and the goal is to move the balls (after being mixed up) into an arrangement where each side of the toy contains balls of one color.

This is a scrabble and put back together type puzzle.

Supplies:
Plastic Parts (3d printed)
Hot glue gun and hot glue
Sculpy colored balls (improvised)
8x balls of color 1
8x balls of color 2
6x balls of color 3
6x balls of color 4

To start off this project 3D print the files below.

After printing, I decided to spray paint the parts in different colors to add an interesting twist. This is optional.

1. 3d print about 28 balls, and then paint them your desired colors in accordance with this list

8x balls of color 1
8x balls of color 2

6x balls of color 3
6x balls of color 4

My 3D printer broke halfway into printing the balls and I didn't have time to fix it, so I had to improvise and make them out of Sculpy clay. Each Ball is about 1.5 cm in diameter.
(the picture of the black ball is a 3d printed version)

This is the file to a 3d printed ball.

1. Hot-glue the axils to the separator.
I used a knife to cut off the extra hot glue, in order for the wheel to turn flat.
2. Attach a wheel to the axil.
I don't have a picture however I repeated this entire process another time

1. Hot glue the case onto the separators with the wheels on them, however, leave one part unglued so you can fit balls in
2. In the place where you did not hot glue the case to the separator, place the balls into the wheel, and then turn it. Work each ball to fill all the wheels dips with balls.
3. Finish by gluing the rest of the case to the separator.

Haha, I made the smart decision of sitting on my case by accident so I had to hot glue it back together,

Pro Tip: Do not leave your toys on the couch.

Unfortunately, my Toy is not the prettiest, but as are most first tries.

An issue I found with my design was that the wheel design caused the toy to be rigid. The Toy works but is hard to turn. I started this project only 2 days ago and I was unable to make additional changes. I plan to improve this design in the future

I hope you take inspiration from my experience creating this and create yours in a way that is way more functional. I can imagine this fun little toy being a blast to play with