| Tetrahedrane Tetrahedrane. The Two Brass Monkeys write about Tetrahedrane: Tetrahedrane is an easy assembly puzzle, first designed and prototyped by Oskar van Deventer in May 2009.It is, of course, our brass and stainless steel take on Oskar's 3D printed puzzle "Screwballs".The puzzle has six identical stainless steel rods with right and left-handed threads at the end, and four different vertices, each with three threaded holes.- Tetrahedrane. |
