It's a sand castle mold, it uses math, it can be used to make a sand castle geodesic dome! It just might work. We will add pictures when we get a chance to get to the beach.

Are FabLab class made this for the Thingiversity Math Challenge: Build A Castle.

Designed using TinkerCad. The half piece hex is for the base sand castings. And the little flat hexagons are for reinforcing the joints.

We will add pictures when we get a chance to print a few sets get to the beach to try them out.

Do I hear "Class Field Trip!"?