Klein Bottle

A Klein bottle is a non-orientable surface, much like a Mobius strip it only has one side from which you could travel to any other part of it. Unlike a Mobius strip it has no edges.

I made this for fun while playing around in Blender.

If you print it then I'd suggest using 0% infill as the slicing software may have trouble working out where the inside is.
Prints fine without supports or raft.