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:

mesh_height = 2
mesh_space = 10
border_size = 3
indention = 1
printer_layer_height = .2
printer_skin_size = 1.2
frame_thickness = 1.5
depth = 10
diameter = 67
printer_extrusion_width = .4
shape = 128