Since making the original post I made a standalone device using the original rotor. I fitted it to a scrap washing machine pump motor, added a switch and encased most of it in a plastic junction box. It sits permanently on the end of a bench ready for immediate use, eliminating the inevitable search for the mislaid rotor and then fitting to a drill. The extra convenience means that it gets used quite regularly rather than continuing to work with a magnetised tool.
Click for full size.
I just have to remove the keeper, switch on and it is ready to go.
A couple of typical thingies to demagnetise.
BTW. The keeper is there to prevent the magnets attracting magnetic junk when not in use. That is 100% effective.
Last edited by tonyfoale; May 31, 2022 at 12:57 AM.
baja (Jun 1, 2022), h7eh7e (Jun 2, 2022), Jon (May 30, 2022), mwmkravchenko (Jun 1, 2022), Paul Jones (Jun 4, 2022)
Thanks tonyfoale! We've added your Demagnetizer to our Miscellaneous category,
as well as to your builder page: tonyfoale's Homemade Tools. Your receipt:
New plans added on 11/20: Click here for 2,589 plans for homemade tools.
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