Student builds prosthetic arm using lego pieces

Henrietta Strickland
February 9, 2019

David Aguilar is already using his fourth model of the colorful prosthetic.

The bioengineering student from Spain made a fully functional robotic arm made out of Legos. He's now on his fourth evolution.

"I was very nervous to be in front of other guys because I was different", said Aguilar.

He built four of them, actually, all of which have contributed to the one Aguilar is now using. At the moment, he studies bioengineering at the Universitat Internacional de Catalunya, in Spain. But as his YouTube channel shows, when he needs one, he wants it to be as custom-built as possible.

Aguilar has since upgraded MK I with three more arms, his latest this year - colored an Iron Man-worthy red - called MK IV. He dubbed it MK, the same name Iron Man's first suit had, which Tony Stark usually calls Mark I.

In the below video, Aguilar explains how the blue MK II works with a Lego engine and a fishing cable fixed to the limb. Since then he's gone through various Lego sets, including jets and construction vehicles, reconstructing them into battery-operated arms. His dream is to design affordable robotic limbs for those who need them.captionAn up-close look at one of David Aguilar's prosthetic arms, which was built with Lego pieces.sourceAlbert Gea/ReutersOnce his favorite toys, plastic Lego bricks became the building material for Aguilar's first artificial arm at the age of nine. Currently, studies estimate that the price of a new prosthetic leg can cost between $5,000 and $50,000, not counting the upkeep. Anyone working to bring down the costs would surely find interested buyers. Reuters spoke to Mr. Aguilar and told his incredible story.

Other reports by Click Lancashire

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