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- Dec 27, 2014
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Get 'em hot, they'll fall out. Or, use their magnetism to lift them out, any steel will do.
Thanks for your advice gents.
I have tried the centre punch as I also expected them to break up, but all it did was blunt the two punches I own.
I will try the soldering iron on them and see if I can lift them with another magnet.
Failing that it's looking like a diamond tipped drill.
You might try a supersaturated solution of alum in water. Alum does not react with aluminum, but it will eat through steels. Steels are alloys containing iron. Neodymium magnet is an alloy containing iron.
It will not be a fast process, but it should eat through the magnets in a couple of days. I have not tried it on neodymium magnets, but I have tried it on steel screws in brass and the brass came out unscathed.
Alum is used for pickling, so you can get it off the spice rack at your local grocery.