2V Geodesic Dome Hub Kit

I haven't used them yet, but the quality is excellent. They are sturdy and beautiful. I highly recommend this product.

Solid metal, but the instructions invert the standard 2V dome layout by swapping the bottom pieces for A's instead of B's, making a taller dome with a shorter diameter, so you can't rely on the board length designation letters on the connectors themselves. There is no stop for the 2x4 lumber, but they touch each other and meet at the edges if you screw it in very carefully. I had to use spray foam in the center and vertical supports to make a larger dome with these. If the design had little metal shelves for the board, (harder to manufacture), even if they were just temporary plastic guides, this design would be much easier to work with.