A common misconception in the horse trailer industry is that steel is heavy; and aluminum is light. While this is true, pound per pound steel carries a much higher strength ratio in comparison to aluminum. For this reason, it requires a lot more aluminum to achieve the same strength of steel and composite materials, such as Z-Frame. They actually weigh about the same. However, polycarbonate (the primary material used in 3D horse trailer printing), combined with strengthening materials such as carbon fiber - pound per pound will have greater strength in comparison to aluminum. Thus, less material can be used which results in significant weight savings in comparison to conventional manufacturing methods. Weight savings is a huge factor; especially with transportation moving to the electric vehicle market which has lower payload and tow ratings than gasoline vehicles.