Marble kit 2.0

This is a remake of my first marble kit design.

Warning: I have created version 3.0 of this project. Go take a look:
https://www.thingiverse.com/thing:5820998



It's a marble building set, easy to build and easy to print (no supports required). The diameter of the marble I use is 13mm, but you can use a slightly larger one, since the hole is 14mm.

In the future I will create more kits to incorporate into this one so that more interesting circuits can be create.

Alls kits for marble kit 2.0:
https://www.thingiverse.com/sergiode21/collections/marble-kit-20

I hope you like it.

Update 20/10/2021:
I have upgraded the pieces to a more resistant design that fits more tightly. Now it costs more to insert and remove the pieces but they will not move during the movement of the marble.