Printing with Trash

The 3d4d challenge asks contestants to use 3d printing in developing nations to alleviate poverty. This year’s winning team, from the University of Washington, displayed a system that uses recycled plastics to print latrines and rainwater catchments. Earlier this year, the team entered a 3d printed boat made of recycled milk jugs in an annual race. Annoyed at high prices of PLA and ABS? Just shred some soda bottles and you’ll be printing again. While the build quality’s rough, for large scale projects, it should work fine.