Customized version of http://www.thingiverse.com/thing:40704

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=40704

Using the following options:

ring_width = 7
ring_size = 17.93
ring_thickness = 1.6
Font = write/orbitron.dxf
message = Mary Poppins
font_spacing = 0
font_size = 10