Customized version of http://www.thingiverse.com/thing:84109

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=84109

Using the following options:

lithophane_border = 3
hole_diameter = 4
image_file = lithopaneatoz_4x620140627-13494-ko9xyf-0.dat
number_of_layers = 12
layer_height = 0.2
hole_border = 2