What some Makers are discovering is that, in building 3D printers, some of the components need not be built at all. In fact, there is plenty of discarded material that, while considered refuse, would be perfectly suitable for constructing a RepRap. Just take a look at W. Afate out of Togo for an example. Instructables user gmdownes found that the part of his Prusa Mendel V2 that could most easily be made from upcycled materials was the frame. All you really need is a rigid structure and, in a modern world made up of so many boxes, it wasn’t hard for gmdownes to find a suitable box. With a simple milk carton crate, gmdownes had himself the perfect frame for his MilkRap: I either saw or remembered seeing piles of milk crates sitting behind a convenience store getting dirty and abused, or milk crates being used as shelving in a college dorm, or as a step stool in a mechanics garage, etc.…
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