The file 'PVC Icosahedron Connector 3D Printer Model' is (stl) file type, size is 6.2MB.
With this 3D printed connector, you too can build a large geodesic icosahedron out of PVC pipes!
Instruction Video: https://youtu.be/hYFBnlHmFEE
Building Timelapse: https://youtu.be/QfXMFff_YaA