Tetrahedron Center Spoke Hub

Are you looking to make a tetrahedron, but you want to represent the center point as well as the vertices and edges? Of course you are! Maybe you've invented your own D&D universe, the essence of which can be perfectly described to your inept players with a simple physical model. (you know, hypothetically.) But oh, that math :(

Well, this model has you covered. Print this 40mm center lug, then cut qty-4 1/4" dowels of equal length and insert them into the holes. Now you have the internal framework of you tetrahedron universe. Fill out the outside as you see fit. That band of dullards will finally start to appreciate your creative genius!