“When I outgrow a hand, we can easily make a new one,” explains 12-year-old Leon McCarthy of his “cyborg” hand in 2013. His path into this specialized technology began when his father Paul found a video of 5-year-old Liam Dippenaar’s Robohand, a mechanical, prosthetic hand that can be 3D-printed at home from designs that are available for free on Thingiverse. Materials for it cost around $5.

Read/listen to the fuller story on NPR.

Check out more videos about prosthetics in the archives.

via Laughing Squid.

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