This exploratory research case study reports on outcomes and observations from a junior-level computer-aided design (CAD) elective course, which included a semester long team-based product design challenge that was weaved within the existing course curriculum. Engineering technology (ET) students’ demonstration of iterative product design, when not educated on or given a design process diagram (DPD) to reference and/or follow were explored. Two prototypes from two teams, which were designed, built, and tested over approximately six weeks are showcased. Team A completed five iterations of an enclosure body and two iterations of a lid to hold a small global positioning system (GPS) device. Team B completed four iterations of a base plate for a foot braking system. It was observed that upper-level mechanical engineering technology (MET) students did not require that the instructor teach about or provide a DPD to use/reference in order for successful iterative product design to occur. However, additional research, specifically causal, is needed investigating students’ iterative product design knowledge, skills, and abilities from other degree programs, demographics, and at different time periods of an academic plan of study (e.g., freshman, sophomore, etc.).