Yet another new kind of laser

Magnetite is a black magnetic precursor to red rust. In metallic iron the charge is +0. As it is exposed to air, the oxygen starts pulling electrons from the iron making iron +2 oxide followed by iron +3 oxide (red rust). A mixture of the +2 and +3 iron oxides is magnetic magnetite (black). If this device or Glowforge can knock magnetite off of a substrate, they would allow us to make our own magnetic information storage devices or tailor made magnets like what I posted months ago.