Technique of painting in the sand when it's already a lot, even now there are machines sand painter.
Dbynoe launch, a kinetic sculptor named David Bynoe make a special machine to paint over the sand.
This machine is driven by a few pieces of cable, and use sand as a medium.
This machine was made by Bynoe, specifically for the Telus Spark Science Centre in Alberta, Canada.
Check out the demo video below.