Lecture and presentation about 3D printed technologies, in particular: "3D printed Polycaprolactone scaffolds for biomedical applications" The process of rapid prototyping has nowadays become quite mainstream, with more and more 3D printing devices being deployed in offices and homes. It is gradually becoming the preferred fabrication method for many individuals, able to produce complex and fully customizable components, leading to the adoption of such techniques in advanced material development and the fabrication of high added value products. In this study, a low cost open-source 3D printer is fitted with a novel injection printing head that has been developed for the fabrication of biocompatible scaffolds, enabling the integration of nanoparticles into printable biocomposites. Polycaprolactone (PCL) was selected as the polymeric matrix and antibacterial silver nanoparticles (AgNP) are spread throughout its volume, providing the scaffolds with antibacterial action and increased compressive strength dependent on the silver nanoparticle composition. Several different PCL-AgNP compositions were examined to determine the physical, mechanical and biological properties of the scaffolds fabricated. In situ micro-compression coupled with an optical microscope allow the determination of the scaffolds mechanical properties and the elucidation of the acting fracture mechanisms. PCL-AgNP nanocomposite scaffolds demonstrate a superior performance compared to the pure PCL ones.