Results from a number of studies indicate that the use of drafting models can positively influence the spatial visualization ability for engineering technology students. However, additional variables such as light, temperature, motion and color can play an important role but research provides inconsistent results. Considering this, a set of 5 quasi-experimental studies, was conducted to identify additional critical variables. According to the results, a dynamic, 3D-printed drafting model, presented with a blue background under lighting conditions between 500-750 lux had the highest impact on spatial visualization ability of engineering technology students.