In this lecture we examine the additive manufacturing process called material extrusion using the example of fused deposition modeling (FDM). We will overview the FDM process using a video example, examine some FDM produced objects, and explore important applications, advantages, and disadvantages of the technology. This edition of the video series does not include the quiz, assessment, or assignment portion as mentioned in the lesson. For additional Additive Manufacturing information and resources, visit https://acc.dau.mil/AM