The second plenary meeting of the Q3D project was held in Thessaloniki, Greece, on 17 May 2019, hosted at the premises of the project coordinator, the Information Technologies Institute (ITI), in the Centre for Research and Technology Hellas (CERTH). The main focus of this meeting was to discuss the current project status, and subsequently the advancements and the progress with regard to the previous meeting. Particularly, the Q3D partners presented the results of an in-depth research of the parameters that affect the 3D printing process, and need to be examined thoroughly. Secondly, they analyzed the available non-invasive and destructive monitoring technologies, that could be utilized in order to monitor and select multimodal data in-real time of the 3D printing process, without impeding its regular operation. In this context, the consortium discussed on the status of the overall project and planned the future directions and steps towards its successful implementation, in order to provide surveillance and improvement services of the 3D printing procedure, by ensuring the quality of the final 3D object.