Every year, thousands of people in developing countries lose limbs in wars or due to mines. Even the simplest prostheses could help reduce their suffering - but most the people affected can't afford to buy them. In the project 3DPro, scientists together with a citizens' initiative are developing a solution to produce high-quality medical and cosmetic leg and arm prostheses less expensively. This is possible thanks to new 3D printing and scanning methods that adapt the prostheses individually. The special aspect: The prostheses are made of recycled plastic and can even be made by laypeople - everywhere in the world and for little money.