3D modelling through planar slides, from digital to physical. Experiments on Palazzo Mazzonis’ atrium in Turin

In recent decades, 3D acquisition has become one of the standard methods of documenting Cultural Heritage. At the same time digital fabrication has seen a recent massive diffusion for several applications, not least the field of Cultural Heritage, being used for study, analysis, conservation or access in museum exhibitions. The paper proposes a workflow, that starts from digital survey and modelling, aims to realize a physical model of the atrium Palazzo Mazzonis, an high-representation building, today converted in the Museum of Oriental Art (MAO). The method is grounded on the use of planar sections and of the contours of intersection of planes with the 3D digital model, for creating shape abstractions. The ModLab Arch and the ModLab Design of the Department of Architecture and Design at Politecnico di Torino are equipped with laser cut and CNC milling machines that will allow to continue with the experimentations here proposed.