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:

case_thickness = 1.8
pattern_overlap = 6
pattern_radius = 8
line_shape = 6
pattern_rotation = 15
line_thickness = 6
iphone_version = 1