Photos: Awesome things you didn't know were 3D printed

3D printed heart model

A 14-month old boy needed heart surgery to save his life, as he was born with four heart defects. Doctors at Kosair Children's hospital partnered with University of Louisville physicians and engineers to create a 3D printed model of his heart using images from his CT scan. It was 1.5 times the size of his heart and cost $600 and 20 hours to make. The little boy's heart was repaired with one operation.

For more on 3D printing, see: 

-Photos: 3D printers, a tour of the top models 

-The dark side of 3D printing: 10 things to watch 

-10 facts on 3D printing: Understanding tech's next big game-changer

Image: University of Louisville

By Lyndsey Gilpin

Lyndsey Gilpin is a former Staff Writer for TechRepublic, covering sustainability and entrepreneurship. She's co-author of the book Follow the Geeks.