What better way to celebrate the release of X-Men: Days of Future Past than by building yourself a set of fully automatic Wolverine claws? That’s exactly what Colin Furze did. The claws measure 12 inches long and are 2mm thick, with each capable of slicing through cardboard, cutting up evil watermelons, and even “murdering Mystique-shaped blow up dolls with ease,” says Dvice. Continue reading for the video and more information.

According to Dvice, “The only downside to Furze’s Wolverine claws is that they require a backpack with an air tank and valves in order to work. No biggie. Just cover it up with a fake muscle suit and you’re good to go dude. Furze isn’t done with his DIY superhero inventions yet. On May 22 and May 29, he plans to reveal his other two superhero-related inventions.”