KC pencil holder

NOTE: A better and more general version of this is here:
http://www.thingiverse.com/thing:408698

I used this to determine the right scale to fit a standard pencil for the French Revolution pencil holder project.
http://www.thingiverse.com/thing:395617
Scaling to 11 mm z-height worked for me.
See Instructions for details.
Now customizable. You can use your own letters and pencil sizes.
Note: though you can use Thingiverse's nice Customizer interface, it's much easier to visualize customizations if you View Source and copy it into OpenSCAD, an application that you can install for free.
http://www.openscad.org/downloads.html
Do the customizations in OpenSCAD, then export from OpenSCAD into a `.stl` file, and import that file into Makerbot or whatever 3D printing tool you use.