Huge shapes, laminated cores, anything is possible.
human sized toroid
kicker magnet
20 in. toroid
gapped post (PQ-core)
gapped post & legs (E-core)
rotary xfrmr-stator (16 in.)
rotary xfrmr-rotor (16 in.)
rotary xfrmr-stator (32 in.)
plate (9×9 in.)
read/write tape head