Carbon Units
thingiverse
A customized version of the thing can be found at http://www.thingiverse.com/thing:114247, which was designed using the Customizer app. The specifications used for this creation include a ring spacing of 2.5, manual build plate length and width of 100, a ring height of 6, font "write/knewave.dxf", a center radius of 12, pin cap gap of .45, pin cap width of 4, pin radius of 2.45, ring width of 5, an element of "C", font depth of 2.5, build plate type as 0, a ring height step of .5, pin hole radius of 3, and a mesh resolution of 70.
With this file you will be able to print Carbon Units with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Carbon Units.