Glass Holder

What if your IKEA KALAS glasses http://www.ikea.com/it/it/catalog/products/10096907 always spill down? This is my solution.
I included the original Blender file and an STL version.

Printed using RepRapPro Huxley and PLA (nozzle_diameter = 0.5, filament_diameter = 1.75)

Sliced in Slic3r. It printed well (see images) using:
layer_height = 0.3
perimeters = 2
solid_layers = 2
fill_density = 0.3
perimeter_speed = 50
infill_speed = 50

I also tried reducing layer height (-33%) and increasing speed (+33%) to get the same printing time (about 50 min) and the quality is a little better:
layer_height = 0.2
perimeters = 2
solid_layers = 2
fill_density = 0.3
perimeter_speed = 75
infill_speed = 75