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:

border = 0
second_letter = B
jewlery_loop_thickness = 1
resolution = 64
backing = 0
third_letter = B
jewlery_loop_position = 0
first_letter = K
buildplate_selector = 0
font_weight = 4
radius = 40
thickness = 5
letter_spacing = 0