If you're using that in a metalworking shop, you'll need a cover for the magnets so they don't get completely covered with difficult-to-remove ferrous swarf. A piece of plastic pipe slit to snap over the magnet string might do the trick. Snap it off the broom over the trash barrel and all the swarf will drop away leaving the magnets clean.
Altair (Jan 7, 2016)
When I had my house re-roofed from sawed cedar shingles to a light-weight concrete tile (required fireproof replacement after the house next door burned down in a wildfire), the roofers used a form of magnet broom to gather up all the roofing nails from the cedar shingle tear-off operation. Removing the old cedar shingles dumped a bunch of short nails down on the patios and garden beds near the edges of the house. Similar to your broom design, their magnetic broom pick up 99.9% of the nails and worked very well. Thanks for posting and providing your source of magnets.
Last edited by Paul Jones; Jan 7, 2016 at 02:22 PM.
Philip Davies (Jan 6, 2016)
I would like to get the coils from about a dozen microwaves.
Why buy it if you can build it.
Some of the strongest permanent magnets ever made are found in computer hard disk drives. For your own protection, whenever you discard a computer you should first remove the hard drive, disassemble it and destroy the platters. To do this you will have to remove the magnets (along with a bonus of some high quality bearings). Be careful, they're strong enough to seriously pinch fingers.
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