Marble Run (Improve reaction and coordination)

This is a marble run puzzle toy, all you need is a glass marble.

You can print it out and play it yourself, or you can give it to your children, which can effectively exercise their reaction ability and hand-eye coordination.

Because it took me a long time to practice before I could keep the marble from falling.

Instructions:

• The model is easy to print, requires no support, and only takes 1 hour and 40 minutes to print, using 55g of filament.
• After printing, you need to distinguish the front and back sides, and place the side adjacent to the printing plate in the same direction (as shown in the figure).
• The two semicircles at the bottom are joined together to form not a perfect circle, but a groove, you need to install it according to the example in the figure.
• Use the printed screws to assemble the four parts together.

*If you find that the bolts are loosening during use, you can use glue to stick them on, because you don't need to disassemble them again. I hope you enjoy this model!