Yep, sure is legit stuff. There's quite a few things made out of mu-metal, but spinning rust hard drive cases are the most readily accessible. https://en.wikip

Yep, sure is legit stuff. There's quite a few things made out of mu-metal, but spinning rust hard drive cases are the most readily accessible. https://en.wikipedia.org/wiki/Mu-metal https://en.wikipedia.org/wiki/Mu-metal