Klein Bottle Keychain

This model is remixed from the Klein Bottle that mpatoulachik designed (I think his bottle looks really nice compared to the other bottles I've seen in Thingiverse). All I did was removing 2 walls so that the inside could be seen.

The bottle is supposed to be printed laying down, but it affects the quality of the print. If you print it standing up, it will be smoother, but it's more likely to fail, since one of the bottle walls (that left vertical wall) is very weak.