Zen Marble Garden

The video below shows version 1 (150mm wide) with a 3/8 inch metal ball:

https://www.youtube.com/watch?v=-ywXhvJ4B3o

A Zen Garden with a twist …or a spiral. Zen and the Art of Marble Gardening might be another title for this. When I thought about a zen garden, I visualized the lines in the sand. However, I wanted to be more creative than replicating a Zen Garden with sand and tools for creating a pattern. I wanted to draw people's eyes to the circular repetition that activates a soothing, calming demeanour. I envisioned a marble going down a slope in a spiral design, drawing the eye and centering the mind. That is where I came up with the Zen Marble Garden. Please "like" this file if you collect or download it.

Versions:

Version 1 has a smaller spherical radius for the spiral. This version was operationally challenging based on the small print size, resulting in narrower grooves and requiring a correspondingly small ball with less weight.
Version 2 is taller an