Manufacturing of self-support thin structures with extrusion and sinter-based technology

In the present work a composite 316L filament was used to realize through Material extrusion debinding and sintering the simple cubic (SC) and the body-center-cubic (BCC) cells characterized by critical features as bridges and overhang angle. Two beam size were considered for each cell. The printing quality and dimensional accuracy of the cells was assessed with a visual inspection and through 3D scanning. The adoption of the cooling always improved the quality of the printed parts and influenced the dimensional accuracy of a smaller size of the beams for the BCC, instead a bigger size for the SC.