The last few times we've done slideshows on materials for 3D printing, at least a couple of the materials were recycled plastics. Since then, we've seen some new recycled materials, new recycling machines, and other news about recycling 3D-printed materials. So we've put them all together in one place.
One of the plastics recyclers is designed to work on the International Space Station to turn plastic waste into filament for NASA's zero-gravity 3D printers, currently in development (see the third slide). In other unusual news about recycling plastics for 3D printing, a Michigan Technological University team has invented a system for classifying plastics and a comprehensive recycling coding system that reflects the performance differences of different resins. The codes can be embedded in 3D-printed items so they can be more easily and usefully recycled for future use (see the fourth slide).
Click on the image below to start the slideshow: