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3D printers have also been used to create a scaffold for bone to grow to upon when treating hospital patients.
Professor Dietmar Hutmacher from the University of Queensland in Australia used 3D printing to help repair a hole in a nine year old girl's skull.
The professor took a 3D scan of the girl's skull and used it to design a 3D scaffold that could be placed in the missing piece of her skull.
Inside the scaffold was a precise network of channels that could hold bone cells and allow new tissue to grow. The scaffold was printed using biodegradable materials, which meant after three years it dissolved, leaving new healthy bone that filled in the hole in her skull.
This stainless steel car engine part was created using a laser-sintering 3D printer.
While laser sintering printers are currently one of the priciest variety of 3D fabricators available, they also reduce waste as any unused metal powder can be reused.
This satellite sensor was produced by printing electrical circuits using metal inks.
Printing sensors directly into a satellite's structure saves a lot of room, according to the team that made the sensor from the University of Texas.
The technique may one day provide a reliable way to print out electronic gadets, by printing out circuits inside their casing, said Ryan Wicker, mechanical engineering professor at the university.
The sensor is being sent into orbit for testing in the harsh environment of space, where satellites are subjected to extremes of temperature and heavy doses of solar radiation.