This video introduces 3D printing technologies, focusing on polymer-based methods, particularly Fused Deposition Modeling (FDM), which is widely used due to its affordability and accessibility. 3D printing is generally divided into polymer and metal processes, with polymer methods including FDM and SLA/DLP, while metal printing includes SLS and SLM. The session emphasizes the FDM process, where filament material is deposited layer by layer, and highlights key parameters such as slicing settings, layer height, and nozzle size, which significantly affect print quality. It also explains the workflow of 3D printing, starting from creating a design using CAD software, converting it into compatible file formats (e.g., STL), processing it in slicing software to set parameters, and finally executing the print. Overall, the video underscores the importance of pre-processing and parameter selection in achieving high-quality 3D printed products.