Customized version of http://www.thingiverse.com/thing:551484

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=551484

Using the following options:

cover_printing_y_offset = 10
external_width = 80
wall_thickness = 2
cover_internal_height = 6
part_selector = 2
cover_wall_thickness = 2
cover_thickness = 3
base_height = 60
bottom_thickness = 2
external_length = 100
external_corner_radius = 7
cover_external_height = 5
cover_internal_margin = 0.5