MIT engineers 3D print the electromagnets at the heart of many electronics

https://news.mit.edu/2024/mit-engineers-3d-print-electromagnets-solenoids-0223

"reduce costs, eliminate manufacturing waste... modified multimaterial 3D printer to print compact, magnetic-cored solenoids (fundamental building block of many electronics) in 1 step, eliminating defects that might be introduced during post-assembly processes... solenoids withstanding 2X electric current and 3X magnetic field than other 3D-printed devices... added ventilation for cooling... monolithic extrusion printing, 4-nozzles: 2 for soft magnetics, 1 for biodegradable thermoplastics, 1 for pellets of magnetic nylon"

Related: Manipulating the geometry of the 'electron universe' in magnets
https://phys.org/news/2024-04-geometry-electron-universe-magnets.html