But, in "Days of Future Past", Wolverine has his Adamantium claws again. There was no real explanation as to how he got them back, as he still had his bone claws at the end scene where Magneto and Charles Xavier come to see him.

The X-Men's Wolverine is famous for his Adamantium skeleton and claws, but how many movie or comic book fans actually know the science and procedures taken by the Weapon X Project to actually go about implanting it?

In Astonishing X-Men #1, Wolverine still had his Adamantium claws during the alternate reality, "Age of Apocalypse."In the origin story of how Magneto put together the superhero team, based on Charles Xavier's dream for peace and unity, Apoc