A fascinating TEDX lecture with Dr. Siavash Mahdavi, director of Within Technologies Ltd, a London-based consultancy company specialising in higher-end engineering applications and design using 3D printing.The very diverse work includes medical software for bone implants, customized high-heel shoes and spaceship material.

Above: 3D printed titanium engine part with varying density for force distribution.
Above: 3D printed cranial implants with varying density.
Above: the medical software by Wthin allows to vary density of lattice depending on forces