The joint technology has an ancient history. The right connection between the elements of a construction system is decisive in the composition and stability of the structure. The productive innovation of digital fabrication [1, 2, 3] makes possible experiments with new joints [4] or digitally interpret traditional ones [5]. The proposed research has the dual aim of testing digital fabrication in the development of digital joints and teaching new generations of makers strategies for connecting the elements of a project.
Three CNC machines are selected for digital fabrication, chosen from those most available and accessible in the area: FDM additive machine, laser cutting and milling machine. A network of local Fablabs provide the machinery and support for the production phase. Each student develops his or her own project in accordance with digital fabrication technology and at the same time creativity is encouraged. Much attention is given to the issue of joints tolerances in design and production. Collective reviews are organised so that each maker can learn from the example of the others.
The experiment produces several dozen digitally manufactured joints. Types, sizes, characteristics, materials and colours differ according to the makers' choice. The process tests how digital fabrication behaves in the development of joints, both in terms of study prototypes and as finished elements to be used in digital handicrafts. A creative concept of technical connection emerges, in some cases the interlock, in addition to fulfilling its identity function, becomes a decorative element. This study is preparatory to the development and design of construction systems and furniture in digital fabrication.