Single surface Klein bottle

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A Klein bottle is akin to a Möbius strip, sharing a singular surface with a single side. This surface boasts no outside on one side and no inside on the other, rendering the model incapable of circumscribing a volume. Consequently, it cannot be printed. You may attempt to print it in Cura's Surface Mode, but excessive overhangs will render it impractical. Alternatively, you can opt for printing it normally and then view it from the bottom, whereupon its status as a genuine Klein bottle will be compromised.