I’ve had good results discharging a 450V 1kJ capacitor bank through several turns of 10 AWG wire. If you don’t have a capacitor bank laying around, one of those magnetizers will work just as well.
Putting a tool in a powered coil will magnetize it temporarily but I don’t think it will stay magnetic or at least not for long. They sell little magnetizers that you can get cheap that will last a lot longer though if that’s what you’re looking for…
cmnybo@discuss.tchncs.de 1 year ago
nothacking@discuss.tchncs.de 1 year ago
Really? If have had good results just placing a screwdriver inside an electromagnet, still magnetized a few years later.
lightnsfw@reddthat.com 1 year ago
Maybe it depends on the coil/power source. When I tried it I was just messing around with a coil I had and 12v source and it was not that effective.
lossykittens@reddthat.com 1 year ago
I appreciate it, I didn’t realize it was so temporary
BrownianMotion@lemmy.world 1 year ago
Depending on the coils number of windings, and the size of the tool it will magnetise it pretty well. I used to do this to screwdrivers before they came pre-magnetised. And they will stay magnetised for a very long time.
Most of the time the reason for becoming demagnetised is due to dropping the tool several (many) times.