Paper cutters can cut both ways: A really good one will make a project much more streamlined, and the end product more attractive, but a so-so cutter will add time and result in a sub-par product. But ...

An open-source system has been created that uses a laser to melt powdered plastics and biomaterials into intricate 3-D designs. The OpenSLS selective laser sintering system costs about 40 times less ...