We like to mix it up a little - sometimes we toss in a little auto tech coverage, other times we look at flying cars and strange medieval weaponry (like my favorite, the trebuchet) so today we’re going to put on our lab coats and explore the odd practice of shrinking coins, or to be more particular, the art of Quarter Shrinking.

Theory of Operation:

The Quarter Shrinker uses a technique called high velocity electromagnetic metal forming, or “Magneforming.” This technique was originally developed by the aerospace industry in conjunction with NASA, and has been popularized by Aerovox, Grumman, and Maxwell. It involves quickly discharging a high energy capacitor bank through a work coil to generate a very powerful and rapidly changing electromagnetic field which then “forms” the metal to be fabricated.

More (a Lot More) on Quarter Shrinking Here