In recent years, 3D printing has become a game changing method for millimeter and centimeter scale prototyping. However, its adoption for microfabrication processes in MEMS and transducer applications remains limited. A primary challenge hindering the relevance of additive manufacturing in microfabrication is the difficulty to integrate structural, electrical, chemical, and biological functionalities within a single process at small scales. In my research, I explore new approaches for micro-scale fabrication using confined flows, with a focus on material diversity and process integration.