The Hacksmith, not content with packing a mere visual replica of Captain America’s shield, went 117 extra miles and made his electromagnetic, which means that it can attach/detach from his arm just like it does in the movies.

(Note: he didn’t build the shield itself, that came from Machinaprops).

Using a set of lithium-polymer batteries, he built a pair of magnets that have the power to lift over 3000lbs (you can see him lifting frames like a super hero in the making-of video below ).