I saw one of Bruce Shapiro's beautiful sandtables at Technorama in fall 2019 and immediately fell in love with the idea of tracing sand on a polar plotter.
If you want to have the most beautiful coffee table in the world, buy one at Sisyphus Industries. If you want to take a shot at building one yourself, this repository is for you. Build one and share your insight here.
Thanks to Jeff Eberl's amazing pattern generator Sandify, your table will never be boring.
