Klein Bottle

thingiverse

People often think of a Klein bottle as a non-orientable surface, much like a Mobius strip that only has one side from which you could travel to any other part of it. Unlike a Mobius strip, however, it has no edges at all. I made this just for kicks while messing around in Blender. If you decide to print it out then I'd recommend using 0% infill as the slicing software may struggle figuring out where the inside is. It prints perfectly fine without any supports or raft needed.