Customized version of http://www.thingiverse.com/thing:112117

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=112117

Using the following options:

printer_extrusion_width = .4
shape = 128
mesh_height = 3
frame_thickness = 1.2
border_size = 2.4
printer_layer_height = .2
indention = 0
diameter = 76.2
depth = 10
mesh_space = 4
printer_skin_size = .8