“…Also, many other factors, such as the shape of the product, the injection machine, and the human operator, may or may not lead to a successful approach. [2] Due to all the mentioned circumstances, a number of defects, aesthetic or mechanical, may occur throughout the manufacturing cycle. Whether we refer to bubbles and/or porosity, surface defects, black spots, bumps, defective dimensions, fragility, or low resistance, the effect is the same: rework and financial losses.…”