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_thickness = 2
case_thickness = 1.8
build_plate_selector = 0
pattern_rotation = 45
pattern_radius = 10
iphone_version = 1
pattern_overlap = 50
pattern_shape = 4