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_rotation = 0
build_plate_selector = 0
pattern_shape = 4
pattern_radius = 18
pattern_thickness = 5
pattern_overlap = 56
case_thickness = 2.4
iphone_version = 1