This is just a sketch of an idea for a self-reproducing machine on the Moon.
As fanciful as it is, every part of it is something that has been done before, just not in combination like this.
"Lunar dustbuster" pushes regolith dust across surfaces with wave of static charges [https://science.nasa.gov/science-news/science-at-nasa/2006/19apr_dustbuster] [www.spaceflightinsider.com/missions/hawaiian-students-test-lunar-dust-buster-nasa-ames/]
Levitated induction melting (Just google "induction levitation melting" or "cold crucible") [https://www.youtube.com/watch?v=8i2OVqWo9s0] [https://fas.org/sgp/othergov/doe/lanl/lib-www/la-pubs/00418618.pdf]
Lunar regolith can be surprisingly conductive, especially when hot [https://articles.adsabs.harvard.edu//full/1971Moon....2..408S/0000408.000.html]
Electrospray ionization [https://en.wikipedia.org/wiki/Electrospray_ionization] [https://en.wikipedia.org/wiki/Liquid_metal_ion_source]
Using microwaves to convert glass to plasma [https://www.youtube.com/watch?v=cskB5c0mJ58] [https://www.sciencealert.com/did-this-piece-of-glass-really-break-a-law-of-thermodynamics]
Mass spectrometry [https://en.wikipedia.org/wiki/Mass_spectrometry]
Ion beam deposition [https://en.wikipedia.org/wiki/Ion_beam_deposition]
Plasma ion-beam 3D printing: A novel method for rapid fabrication of customized MEMS sensors [https://www.semanticscholar.org/paper/Plasma-ion-beam-3D-printing%3A-A-novel-method-for-of-Watanabe-Kinoshita/5e4e7e42e46820bf25884d3eb4d3ca0fbaf199ae]
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