There are a lot of heroes who work with Enabling the Future, the non-profit that designs, 3D prints, assembles and fits children and people in need with inexpensive prosthetic arms. One of their unsung heroes is Christian Silva, a mechatronics engineer who works with a Bogotá, Colombia-based group of e-NABLE volunteers. For two years Silva has been 3D printing prosthetic arms, often with no outside resources other than what he could contribute himself. His latest project is an Iron Man-themed prosthetic arm that he and his team created for a young boy named Jose who was born missing his right arm. You can read more over on