And I thought some things I made were complex . .

1

I’m not sure how I found this, and maybe you have seen it already. But I think this is an amazing thing to have built.

2

Hi Russel,
That is a really interesting project.

There are two youtube channels covering the progress of building the machine.
https://www.youtube.com/user/wintergatan2000
https://www.youtube.com/c/Wintergatan2021/videos

3

Hi Andrew,
Almost everything about it appeals to me.
A combination of sculpture, sound, engineering and perseverance. And he has some great toys to help him make it.