text: how do i magnetize a coin?   most coins are made of metals or alloys that will not hold a permanent magnetic field.  you'd need to start by finding a coin made out of an alloy or metal (iron or steel or alnico) that can hold a magnetic charge; then, you just need to put it up against a strong magnetic field (as might be a bar magnet or horseshoe magnet or an electromagnet) for a while.