Woodworker Keith Williams of Oddball Gallery in Minier, Illinois creates geodesic spheres that balance math and art. Each sculptural form is created from 170 wood triangles that are then hand-assembled into 12 pentagons and 20 hexagons. Next these shapes are glued together into an angular 180-sided ball that is placed onto a lathe and transformed into a completely smooth sphere.

As Williams removes approximately 1/4″ of wood, natural rings from the plywood are brought to the surface, covering the final piece in a dizzying array of concentric circles. You can watch a behind-the-scenes look at how these objects are made in the video above. FInd more peeks into the Oddball Studio on Williams’ website and Youtube. (via Laughing Squid)