Buckminster Fuller taught us how to construct a complex of triangles to support wide expanses without using beams. In the late 1950s, Arthur Fentiman devised a metal connector that infinitely expanded the possibilities for dome construction, beyond Fuller's circular Geodesic form.

Each apex of interlocking metallic triangles is a critical convergence of structural forces and moments. Traditional bolted and welded connections are either costly, inefficient or unreliable.

Fentiman's design dovetails the end of a tube element into a matching connector. Material is displaced, not removed. End-angles of tubes can vary, opening the door for freedom of shape.

Geometrica has improved on Fentiman's original idea by optimizing the connector's engagement patterns, resulting in full transmission of the tube material strength through the joint.