It's not exactly a simple task. As its creator James explains, a lot of work was needed to ensure the 30-pound shield (magnets and batteries too), could be held on his arm without, well, breaking something. A lot of padding was needed on the brace too. The electromagnets themselves were definitely potent enough to make it into superhero tech: the 12 V magnets could each lift 260 pounds -- but crank that up to 72 volts and the pair can attach to around 1,600 pounds -- at least until they quickly burn out. The keep it light, the replica shield is made of aluminum (not vibranium), meaning any magnetic influence requires additions.
The shield isn't quite finished, but it'll holster into a matching biker jacket that also has magnets built into it. James is already able to get a bit of bounce off some walls, and even reattach the shield to the brace. Not quite ready for Thanos, but it's a start.