Since many Italian schools are equipping themselves with 3D printers and the MIUR has financed these activities with dedicated calls, we thought it would be interesting to try to design and build a portable lunatario through digital fabrication. A lunatario is a large box, in our octagonal design, with eight holes to spy inside and a small moon hanging in the center. The boys observe this canned moon lit by a torch in one of the holes. The description of the possible explorations with the lunatic are described in thisLEGGI TUTTO