Customized version of http://www.thingiverse.com/thing:78719

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=78719

Using the following options:

hole_border = 5
lithophane_border = 0
number_of_layers = 12
image_file = lithopaneatoz20140925-18164-1h2ouuf-0.dat
hole_diameter = 5
layer_height = 0.2