Compound of Five Tetrahedra - finally built (red/black)

Hi, this is not a render. Built the five-tetrahedra compound. Took a while to get here. Previous post used random colors because I didn't have enough pieces to commit to a scheme. Went with red and black this time - simpler, cleaner, and honestly easier on the eyes. 1380 pieces. 1088 gr. 29.6 x 29.6 x 29.6 cm. Build time: 4 hr aprox. Edges are 28 units long, double-thickness for rigidity. Hinges at the vertices, no Technic. It holds together better than I expected. There's a version published...