This is an axial flux generator designed to be printed on a RepRap/Makerbot or similar, with a small build envelope. It features (more-or-less) toolless assembly. Get the OpenSCAD source here: https://github.com/haydnv/mark1This generator uses rare earth magnets, so be extremely careful when putting it together—you can easily lose a finger or worse if one magnet attracts another while your hand is in the way. You now have a functioning 3-phase electrical generator!