My Challenge to Make a Marble Run Machine - Shishi Odoshi

I've completed making a part of Shish Odoshi on my marble run machine.
Shishi Odoshi is a type of water feature that makes a sound in a traditional Japanese garden. Initially, it was created to keep deer or wild boars away from Japanese gardens and avoid damage. Now it's a garden decoration.

When I decided to make a marble run machine, I'd been looking for ideas that could be used. One day when I was watching YouTube's top page, I saw a video of Shishi Odoshi. Then I thought I could arrange it and use it on my machine.

It's better to show you a video than describing it in my words. 

This is a Shishi Odoshi.

As you can see, it's made of bamboo. Water is poured into the bamboo with the ends cut at an angle. When the bamboo is filled with water, it gets heavy and declines and releases the water inside; then, it returns to the first position. When it returns, it hits the rock underneath and makes a sound. I wonder if the sound effectively kept animals away, but at least people love the sound.

Let's go back to the marble run machine.
I had a strong impression of Shishi Odoshi, shaped like a cylinder, because the originals are made from bamboo. Therefore, I drilled inside a rounded timber. However, the cylinder can contain only four or five balls inside.
Why didn't I notice it before I drilled it?

 

 

 

It wasn't enough. Seeing many balls rolling out of the Shishi Odoshi would be more fun and dynamic. I decided to make a box instead of being restricted to the original rounded shape.

 

 

 

 

Here is the box I made. The dark brown box on the right-hand side is the Shishi Odoshi. 

This box can contain 13 balls; when the 14th ball drops, it reclines and releases all the balls onto the rail underneath.

 

While making the Shishi Odoshi, I also had to make a long rail. 

 

This rail supplies balls. There is a hole at the end of the rail. Balls drop from the hole and go into the Shishi Odoshi. It's a simple structure, yet fun to look at.

 

Unfortunately, the rail sticks out too far, making it a little difficult to see the Shishi Odoshi.
I should have made the rail shorter.

Here is the video of my Shishi Odoshi moving.

 

This is a picture of the latest machine. There is still plenty of room on the above part.

I am still considering the rest of the design. I want to make the rest of the parts like amusement park attractions, kinetic and cheerful.

See you then.