by Snille, published
This is a DIY art. This was one of the first project I printed on my 3D-Printer. Just a really cool thing to have. :)
This is how it looks live: http://www.youtube.com/watch?v=G-c5_IVQEhE
Basically, print all the parts. You will need to print some trays more the once. Buy the things needed and assemble. It's the printing that takes time. :)
The motor: I used an old cam timer motor: http://en.wikipedia.org/wiki/Cam_timer
But anything with a low gear will work. All depending on what speed you want of course.
You can read the full story here: http://www.snille.net/index.php?info=gear-painting