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Still alive, bought a condo, been trying to get my life in order, especially after the election.
Particularly busy with a concept that involves printed electromagnet coils and learning how to use them to do really cool stuff like stacked axial flux motors or integrated slip bearings. All in FreeCAD
#FreeCAD
@reprapryn Wait, _printed_ electromagnetic coils? I assume you're using like SLS or something, not FDM?
Also, welcome back!
@koz FDM. There are three filaments fairly available that is ferromagnetic and reasonably available.
Amolen iron filament (it's shitty though, relative permeability of 2)
Protopasta Iron filament (what I'm using for this prototype, relative permeability of 8. Easiest handling characteristics)
Virtual Foundry 7-14 stainless (relative permeability is 60? But needs their inline heater)
You don't actually want this solid, because Eddy currents. And less performance is okay for these prototypes
@koz goal is to bring them to RMRRF. Real goal is to aquire this new class of material coming online that is basically silicon steel powder with a polyurethane thin coating. Can be tamp sintered and makes a magnet just as strong as Esteel lamination with even less Eddy currents. Currently in use in newer electric car designs.
@koz want to do a startup if my plans pan out. Got some ideas for winding these exotic coils, automated assembly, and functions that really lean into 3d printing of them
@reprapryn @koz This sounds related to some of the stuff Sunshine is doing.