Interesting. My initial thought was that it was the old article about repairing dents in a brass wind instrument with a super strong rare earth magnet. https:/

Interesting. My initial thought was that it was the old article about repairing dents in a brass wind instrument with a super strong rare earth magnet. https://www.supermagnete.de/eng/Magnet-applications/Straightening-out-brass-instruments https://www.supermagnete.de/eng/Magnet-applications/Straight...