Buying a 3D printer is exciting, but you'll need projects and models to make it all work. These free sites offer a huge range ...

3D printers aren't just for hobby projects. Some everyday items are surprisingly cheaper to make at home if you know what's worth printing.

NASA uses 3D printing in space, sending the first printer to the International Space Station in 2014 and printing more than 12 parts, including a ratchet wrench. Companies like Archireef and Reef ...