Left over magnet from my trailer project, now put into service removing iron from incinerated interrogated circuit chips before refining.
Electric magnet is 12 volts DC, run off my battery charger, would work for separating iron screws from those made of stainless or brass.
The nifty thing is once the power is cut the magnet releases anything in it's grasp instantly. I have three of these magnets, later on I'm going to affix them to a long board with a handle.
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