Customized version of http://www.thingiverse.com/thing:40703

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=40703

Using the following options:

pattern_radius = 4
case_thickness = 1.8
pattern_overlap = 40
build_plate_selector = 0
pattern_shape = 6
iphone_version = 2
pattern_thickness = 2
pattern_rotation = 0