@HonkHonkBoom @NoDoxGregBrady @givenup @BowsacNoodle @KK954 @TrevorGoodchild That reminds me — I saw a youtube video of a White Englishman who rigged up some 200 or so neodymium magnets on a three-foot-or-so plywood disk, mounted it on a truck-wheel axle and spun it with a drill press. He calculated out that the magnets flipped polarity comparably fast to an induction stovetop, and he was able to boil water in a copper tube with it.