Fractal structures are often used to maximize performance of exchange surfaces, that's why the radiator shape is inspired by the Peano space filling curve. On the contrary to what it might seem, this complicated volume is quite easy to build, the first modules are made of existing PVC plumbing joins (a 90Â° M/F elbow) fitted together by rotation so it is unnecessary to produce a cast which already exists. Repeat the operation by using these modules instead of the initial join-by-join process to reach a second level, and then redo the assembly one more time with this new component to fulfil the product. The final 34 cm³ structure achieves an excellent heat output thanks to a 2 m² surface area. Octocube builds up into a radiant heater with a large surface area, and the inherent flexibility and modularity of the elbow. It is designed to be a sculptural heater that fits in with any interior.