When the automobile moguls at Toyota Motor Corporation decided that they wanted to produce a prototype for a car seat that was as lightweight as possible, they found themselves face to face with a complex project that was meant to be handled by 3D printing technology. How would the Toyota team possibly design, build, and manufacture such a complex and sizable 3D printed car seat? That’s where Belgium-based 3D printing service bureau and software developer Materialise and their enthusiastic engineering team came in. Using a specialized method of topology optimization, Toyota and Materialise were able to assign various levels of density to the car seat design before transforming it into a 3D model. The lower density areas were then populated in Materialise’s 3-maticSTL software, which allowed for design modification, repair, and simplification of the car seat’s 3D files. The 3-maticSTL method was also utilized to remove unnecessary print material and add comfort to the seat thro...