Built an electromagnet into a board to see how it would look. Wired it up to a switch. This is preliminary research phase into what may be a bigger project later down the road.
Magnetic stir plate from cheap components. Rare earth magnet from HDD, top of a CD case, fan, 12 v wall wart, and a means of pulse width modulation, or just go full blast 24/7 if ya want.
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