Aut cum scuto aut in scuto
How does one separate the iron from this thing?
If you get one of the really strong ones, it will have a lever on the housing that you move over in order to retract the magnet within the housing away from the metal.
When I was about 15 I bought a super magnet out of the back of a comic book and took it down to the lake. I pulled up hundreds of fishing lures, some of which I still use, a ton of outright junk and an outboard motor, that I sold to a guy that was watching me haul it up from his camp. I finally latched onto something I just couldn't budge one day and snapped the little rope I had and that was that. Fun while it lasted though.