K2

K2, by Robert Lang. 60 pieces, which makes five intersecting tetrahedron (each tetrahedron is made out of four triangles). Paper is some shiny aubergine thing from papersource.

Probably the most ambitious thing I've attempted so far haha. Given as a gift to my advisor, with whom I've been working on knotted/entangled filaments. I thought it was appropriate xD

Since it was a gift, I glued the joints for stability. I found afterwards that I actually made a mistake...four of the tetrahedron are built clockwise, and one is counterclockwise (i.e. the orientation of the three triangles in each 'point'). I'll try again one day and do it properly!