Customized version of http://www.thingiverse.com/thing:248635

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=248635

Using the following options:

second_letter = R
radius = 10
jewlery_loop_position = 0
font_weight = 4
resolution = 32
buildplate_selector = 0
thickness = 2
jewlery_loop_thickness = 1
first_letter = C
third_letter = S
border = 0
letter_spacing = 2
backing = 1