Low poly klein bottle mk2

Just 11 faces and parametric.

Update

kl bttl mk2.stl slices with one error (at least for me) which adds a layer closing the bottle neck at the top of the inner wall... also, RepG was reporting 20cc! of material needed

Added kl_bttl_mk2 2.stl: radius 30, height 60, walls 1.1mm, 7cc & no slicing error.