“3-D printing has progressed over the last decade to include multi-material fabrication, enabling production of powerful, functional objects. While many advances have been made, it still has been difficult for non-programmers to create objects made of many materials (or mixtures of materials) without a more user-friendly interface. But this week, a team from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) will present “Foundry,” a system for custom-designing a variety of 3-D printed objects with multiple materials.”