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:

font_spacing = 0
ring_thickness = 1.6
font_size = 10
ring_size = 18.14
Font = write/Letters.dxf
message = Mariken
ring_width = 7