Zesch coasters interlock in a hexagonal grid, to serve as trivets for larger items, or to create fun table artworks...
This is the 3d-printable versi...on of the Zesch coasters I designed for Soonsalon. They fit to the bamboo, heat resistant version which can be found here: http://www.michielcornelissen.com/Zesch_interlocking_coasters_trivets.html