OK, it was a 3D printer but that’s still pretty cool huh? The smart guys at Cornell University used the printer to image and model an ear and then created a mold.
The mold was filled with a gel made from the collagen in a rats tail (hold the jokes) and then cow cartilage was added.
The final result was so good they hope to be able to use the technology within months.
Even better news comes from how fast they can produce the replacement part. It takes less than a day to create the ear and in about three months enough cartilage has grown to make it usable.
Scientists hope to use the product on people who have had accidents or are born without parts of their ear.